Change search
Refine search result
123 1 - 50 of 130
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Addo, Rebecka N.
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Uppsala University, Sweden.
    Wiens, Stefan
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Nord, Marie
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Olfactory Functions in Adults With Autism Spectrum Disorders2017In: Perception, ISSN 0301-0066, E-ISSN 1468-4233, Vol. 46, no 3-4, p. 530-537Article in journal (Refereed)
    Abstract [en]

    Autism spectrum disorders (ASD) are often characterized by atypical sensory behavior (hyperor hyporeactivity) although evidence is scarce regarding olfactory abilities in ASD; 16 adults with high-functioning ASD (mean age: 38.2, SD: 9.7) and 14 healthy control subjects (mean age: 42.0 years, SD: 12.5) were assessed in odor threshold, free and cued odor identification, and perceived pleasantness, intensity, and edibility of everyday odors. Although results showed no differences between groups, the Bayes Factors (close to 1) suggested that the evidence for no group differences on the threshold and identification tests was inconclusive. In contrast, there was some evidence for no group differences on perceived edibility (BF01 = 2.69) and perceived intensity (BF01 = 2.80). These results do not provide conclusive evidence for or against differences between ASD and healthy controls on olfactory abilities. However, they suggest that there are no apparent group differences in subjective ratings of odors.

  • 2. Aletta, F.
    et al.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Kang, J.
    Towards acoustic indicators for soundscape design2014In: Proceeding of Forum Acusticum 2014, 2014, article id SS31_10Conference paper (Other academic)
    Abstract [en]

    Scientific research on how people perceive, experience or understand the acoustic environment as a whole (i.e., soundscape) is still in development, both with regards to acoustic properties, as well as personality and individual differences. In order to predict how people would perceive an acoustic environment, it is central to identify the underlying acoustic properties of soundscapes. In this study these properties were approached by investigating the visual similarity of colour prints of 50 audio spectrograms (time vs. frequency), representing audio recordings of a variety of acoustic environments. In total, 15 female and 15 male students from the University of Sheffield were recruited to assess the 50 spectrograms by sorting them into groups based on how similar they were perceived to be. A distance matrix, derived from the sorting data, was subjected to a Multidimensional Scaling analysis to map the underlying dimensions of similarity among the spectrograms, which are proposed to represent the underlying acoustic properties of the corresponding acoustic environments. Three dimensions were identified. The first dimension relates to Distinguishable–Indistinguishable sound sources, the second dimension to Background–Foreground sounds, and the third dimension to Intrusive–Smooth sound sources. The results also show that established acoustic parameters are inappropriate as indicators of acoustic environments and that further research is needed in this field.

  • 3. Aletta, Francesco
    et al.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Kang, Jian
    Dimensions Underlying the Perceived Similarity of Acoustic Environments2017In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 8, article id 1162Article in journal (Refereed)
    Abstract [en]

    Scientific research on how people perceive or experience and/or understand the acoustic environment as a whole (i.e., soundscape) is still in development. In order to predict how people would perceive an acoustic environment, it is central to identify its underlying acoustic properties. This was the purpose of the present study. Three successive experiments were conducted. With the aid of 30 university students, the first experiment mapped the underlying dimensions of perceived similarity among 50 acoustic environments, using a visual sorting task of their spectrograms. Three dimensions were identified: (1) Distinguishable-Indistinguishable sound sources, (2) Background-Foreground sounds, and (3) Intrusive-Smooth sound sources. The second experiment was aimed to validate the results from Experiment 1 by a listening experiment. However, a majority of the 10 expert listeners involved in Experiment 2 used a qualitatively different approach than the 30 university students in Experiment 1. A third experiment was conducted in which 10 more expert listeners performed the same task as per Experiment 2, with spliced audio signals. Nevertheless, Experiment 3 provided a statistically significantly worse result than Experiment 2. These results suggest that information about the meaning of the recorded sounds could be retrieved in the spectrograms, and that the meaning of the sounds may be captured with the aid of holistic features of the acoustic environment, but such features are still unexplored and further in-depth research is needed in this field.

  • 4. Aletta, Francesco
    et al.
    Kang, Jian
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. University of Sheffield, United Kingdom.
    Soundscape descriptors and a conceptual framework for developing predictive soundscape models2016In: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 149, p. 65-74Article in journal (Refereed)
    Abstract [en]

    Soundscape exists through human perception of the acoustic environment. This paper investigates how soundscape currently is assessed and measured. It reviews and analyzes the main soundscape descriptors in the soundscape literature, and provides a conceptual framework for developing predictive models in soundscape studies. A predictive soundscape model provides a means of predicting the value of a soundscape descriptor, and the blueprint for how to design soundscape. It is the key for implementing the soundscape approach in urban planning and design. The challenge is to select the appropriate soundscape descriptor and to identify its predictors. The majority of available soundscape descriptors are converging towards a 2-dimensional soundscape model of perceived affective quality (e.g., Pleasantness–Eventfulness, or Calmness–Vibrancy). A third potential dimension is the appropriateness of a soundscape to a place. This dimensions provides complementary information beyond the perceived affective quality. However, it depends largely on context, and because a soundscape may be appropriate to a place although it is poor, this descriptor must probably not be used on its own. With regards to predictors, or soundscape indicators, perceived properties of the acoustic environment (e.g., perceived sound sources) are winning over established acoustic and psychoacoustic metrics. To move this area forward it is necessary that the international soundscape community comes together and agrees on relevant soundscape descriptors. This includes to agree on numerical scales and assessment procedures, as well as to standardize them.

  • 5. Aletta, Francesco
    et al.
    Margaritis, Efstathios
    Filipan, Karlo
    Puyana Romero, Virginia
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Kang, Jian
    Characterization of the soundscape in Valley Gardens, Brighton, by a soundwalk prior to an urban design intervention2015In: Proceedings of Euronoise 2015 / [ed] C. Glorieux, Nederlands Akoestisch Genootschap and ABAV - Belgian Acoustical Society , 2015, p. 1547-1552, article id 357Conference paper (Other academic)
    Abstract [en]

    The purpose of the present study was to characterize the soundscape of the Valley Gardens in Brighton before the area is converted into a downtown park. Valley Gardens is located in the busy city centre. It extends from the Brighton Pier at the seafront and approximately 1.5 km to the north. It includes Old Stein, Victoria Gardens, St Peter’s Church, and The Level. In 2015 work will commence on redeveloping Victoria Gardens and St Peter’s Church. In order to characterize the soundscape of the Valley Gardens prior to this urban design intervention a soundwalk was conducted. In October 2014, a group of 21 persons -experts in acoustics and officers of the City Council- were guided through the area together, and assessed the soundscape at eight sites: five within the Valley Gardens and three reference sites. The assessments covered the soundscape quality, how appropriate the soundscape is to the place, the dominance of perceived sound sources, and the affective quality of the soundscape. In addition, binaural recordings and sound-level measurements were conducted at each of the eight sites during the soundwalk. Preliminary results indicate that the Valley Gardens was dominated by the sound of road traffic, and that the soundscape was perceived as inappropriate to the place. Consequently, the planned design intervention should reduce the dominance of road-traffic sound and introduce more positive sounds, like the sound of people and nature. This would be done through careful planning of the landscape and human activities within the area. The plan is to follow-up these results with a post-intervention soundwalk.

  • 6. Andersson, Linus
    et al.
    Sandberg, Petra
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Nordin, Steven
    Effects of Task Demands on Olfactory, Auditory, and Visual Event-Related Potentials Suggest Similar Top-Down Modulation Across Senses2018In: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 43, no 2, p. 129-134Article in journal (Refereed)
    Abstract [en]

    A widely held view is that top-down modulation of sensory information relies on an amodal control network that acts through the thalamus to regulate incoming signals. Olfaction lacks a direct thalamic projection, which suggests that it may differ from other modalities in this regard. We investigated the late positive complex (LPC) amplitudes of event-related potentials (ERP) from 28 participants, elicited by intensity-matched olfactory, auditory and visual stimuli, during a condition of focused attention, a neutral condition, and a condition in which stimuli were to be actively ignored. Amplitudes were largest during the attend condition, lowest during the ignore condition, with the neutral condition in between. A Bayesian analysis resulted in strong evidence for similar effects of task across sensory modalities. We conclude that olfaction, despite its unique neural projections, does not differ from audition and vision in terms of task-dependent neural modulation of the LPC.

  • 7. Andéhn, Mikael
    et al.
    Nordin, Fredrik
    Stockholm University, Faculty of Social Sciences, Stockholm Business School.
    Nilsson, Mats E.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Facets of country image and brand equity: Revisiting the role of product categories in country-of-origin effect research2016In: Journal of Consumer Behaviour, ISSN 1472-0817, E-ISSN 1479-1838, Vol. 15, no 3, p. 225-238Article in journal (Refereed)
    Abstract [en]

    The country-of-origin effect is a topic central to the field of international marketing. Country of origin has been found to exert a particularly potent effect on consumer evaluation in situations where there is a strong link between a country and a particular product category. The present study provides further insight into how this particular effect can be understood. Drawing on a novel conceptualization of how country image and product categories interact, this study tested the relative evaluative relevance of product category with respect to estimates of brand equity across a variety of product categories. The findings suggest that facets of a country's image that are more closely related to the evaluation situation exert a greater influence on the evaluation of brands. This result encourages scholars as well as practitioners to re-evaluate which situations might cause the country of origin effect to hold managerial relevance and paves the way for new paths toward a more comprehensive understanding of the effect. 

  • 8.
    Arshamian, Artin
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Karolinska Institutet, Sweden; Donders Institute for Brain, Cognition, and Behavior, The Netherlands; Radboud University, The Netherlands.
    Iravani, Behzad
    Majid, Asifa
    Lundström, Johan N.
    Respiration Modulates Olfactory Memory Consolidation in Humans2018In: Journal of Neuroscience, ISSN 0270-6474, E-ISSN 1529-2401, Vol. 38, no 48, p. 10286-10294Article in journal (Refereed)
    Abstract [en]

    In mammals respiratory-locked hippocampal rhythms are implicated in the scaffolding and transfer of information between sensory and memory networks. These oscillations are entrained by nasal respiration and driven by the olfactory bulb. They then travel to the piriform cortex where they propagate further downstream to the hippocampus and modulate neural processes critical for memory formation. In humans, bypassing nasal airflow through mouth-breathing abolishes these rhythms and impacts encoding as well as recognition processes thereby reducing memory performance. It has been hypothesized that similar behavior should be observed for the consolidation process, the stage between encoding and recognition, were memory is reactivated and strengthened. However, direct evidence for such an effect is lacking in human and nonhuman animals. Here we tested this hypothesis by examining the effect of respiration on consolidation of episodic odor memory. In two separate sessions, female and male participants encoded odors followed by a 1 h awake resting consolidation phase where they either breathed solely through their nose or mouth. Immediately after the consolidation phase, memory for odors was tested. Recognition memory significantly increased during nasal respiration compared with mouth respiration during consolidation. These results provide the first evidence that respiration directly impacts consolidation of episodic events, and lends further support to the notion that core cognitive functions are modulated by the respiratory cycle.

  • 9.
    Arshamian, Artin
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Karolinska Institutet, Sweden; Radboud University, The Netherlands.
    Laska, Matthias
    Gordon, Amy R.
    Norberg, Matilda
    Lahger, Christian
    Porada, Danja K.
    Jelvez Serra, Nadia
    Johansson, Emilia
    Schaefer, Martin
    Amundin, Mats
    Melin, Harald
    Olsson, Andreas
    Olsson, Mats J.
    Stensmyr, Marcus
    Lundström, Johan N.
    A mammalian blood odor component serves as an approach-avoidance cue across phylum border - from flies to humans2017In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, article id 13635Article in journal (Refereed)
    Abstract [en]

    Chemosignals are used by predators to localize prey and by prey to avoid predators. These cues vary between species, but the odor of blood seems to be an exception and suggests the presence of an evolutionarily conserved chemosensory cue within the blood odor mixture. A blood odor component, E2D, has been shown to trigger approach responses identical to those triggered by the full blood odor in mammalian carnivores and as such, is a key candidate as a food/alarm cue in blood. Using a multidisciplinary approach, we demonstrate that E2D holds the dual function of affecting both approach and avoidance behavior in a predator-prey predicted manner. E2D evokes approach responses in two taxonomically distant blood-seeking predators, Stable fly and Wolf, while evoking avoidance responses in the prey species Mouse. We extend this by demonstrating that this chemical cue is preserved in humans as well; E2D induces postural avoidance, increases physiological arousal, and enhances visual perception of affective stimuli. This is the first demonstration of a single chemical cue with the dual function of guiding both approach and avoidance in a predator-prey predicted manner across taxonomically distant species, as well as the first known chemosignal that affects both human and non-human animals alike.

  • 10.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Effects of a low-height sound absorbent street furniture and a fountain on the soundscape in a Stockholm pocket park2016In: Proceedings of the Inter-Noise 2016, 2016, p. 5203-5211Conference paper (Refereed)
    Abstract [en]

    This study investigated the effects of a mock-up version of a low-height sound absorbent street furniture and a fountain on the local soundscape in a pocket park in Stockholm. Binaural recordings were conducted at two distances from the main road (on the sidewalk and in the park). The recordings were conducted with or without the mock-up, and with the local fountain either turned on or off. Thirty-two students (16 women, Mage = 26.6 yrs., SDage = 5.7) participated in a listening experiment, and assessed eight experimental sounds, in context of 12 fill sounds, on how pleasant or eventful they were. ANOVA showed that the mock-up had a stronger effect on pleasantness on the sidewalk than in the park, and the fountain contributed to pleasantness only in the absence of the mock-up. Moreover, the fountain reduced the eventfulness in the park but not on the sidewalk. The results are in line with previous case studies. Taken together, they suggest that it is better to build low-height sound absorbent street furniture  han fountains, to improve the urban soundscape.

  • 11.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    How to measure soundscape quality2015In: Proceedings of Euronoise 2015 / [ed] C. Glorieux, Nederlands Akoestisch Genootschap and ABAV - Belgian Acoustical Society , 2015, p. 1477-1481, article id 67Conference paper (Other academic)
    Abstract [en]

    The Swedish Soundscape-Quality Protocol has been criticized for being insufficient, because it proposes to assess soundscape quality by a Good–Bad Scale, and alternatively by eight attribute scales assessing the perceived affective quality of a soundscape. Critics argue that further alternative definitions of ‘soundscape quality’ must be explored. In particular they argue for assessing ‘soundscape quality’ by asking to what extent a soundscape is appropriate to a place. The Sound Cities project at School of Architecture, University of Sheffield, in the UK, investigated this issue by a listening experiment involving 50 university students and 25 urban and peri-urban areas from the UK. The results indicate that the Good–Bad Scale is correlated with the perceived affective quality of a soundscape. Conversely, the appropriateness of a soundscape to a place is orthogonal to the former two assessments and provides additional information. Thus, a soundscape can be appropriate to a place even though it is poor. This raises the issue of which information should be given priority. Probably the best recommendation is to assess soundscape by perceived affective quality. In addition, it is possible to complement this assessment by assessing the appropriateness of the soundscape to the place. However, the latter assessment should not be used on its own, as this may lead to unfortunate conclusions.

  • 12.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Perceived Quality of Urban Open Space: A Stockholm Case Study2017In: Space of Dialog for Places of Dignity: Fostering the European Dimension of Planning: Book of Proceedings / [ed] Eduarda Marques da Costa, Sofia Morgado, João Cabral, Lisboa: Universidade de Lisboa , 2017, p. 843-851, article id 1454Conference paper (Other academic)
    Abstract [en]

    In investigating the quality of urban open space, it is important to investigate how the visual and auditory components contribute to the total quality. The majority of studies investigating audio-visual interaction in environmental perception have concerned how visual stimuli affect auditory perception, such as how vegetation affects the perception of the sound of road traffic from a motorway (e.g., Anderson, Mulligan, Goodman, Regen, 1983). In general, these studies indicate that how people perceive sound depends on the visual context. That is, some sounds are more appropriate in one context than in another, which seems to depend on the participants’ expectations. For example, a city center is expected to sound like a city center, and not like a forest, and vice versa. Typically, a mismatch resulted in discomfort.

    A handful of laboratory studies investigated how perception of auditory and visual aspects related to the perception of the composite of audio-visual information (e.g., Gifford & Ng, 1982; Kuwano, Namba, Komatsu, Kato, & Hayashi, 2001; Morinaga, Aono, Kuwano, & Kato, 2003). Chiefly, these studies showed that visual aspects of environments were more important than auditory aspects. However, how important the visual aspects were, was highly variable across different environments. This indicates that auditory information might dominate over visual information at some point (see also Gan, Luo, Breitung, Kang, & Zhang, 2014; Preis, Koci ski, Hafke-Dys, & Wrzosek, 2015).

    The present paper concerns a case study conducted in collaboration with the City of Stockholm, Sweden, in the summer of 2016. The purpose was to characterize and to investigate the potential for improving the quality of the environment in a centrally located park area in the city. Walks were conducted in situ together with 61 residents. In the walks the participants assessed five preselected sites in and near the park area, with regards to their perceived total, auditory and visual qualities.

  • 13.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Soundscape and the human scale in urban design2015Conference paper (Other academic)
    Abstract [en]

    With changing practices in urban planning, moving away from thinking of the city primarily in terms of infrastructure towards a growing appreciation of the city as a stage for social interaction, the human scale is all more important in urban design. What do the citizens need, and how would they like the city to be? Soundscape research focuses on these issues with regards to the acoustic environment, aiming to develop knowledge, tools and strategies. Central purposes of soundscapes studies are to describe, evaluate, change or to design/create acoustic environments. The aim is to promote health, well-being and quality of life. Because soundscape concerns how people perceive, experience or understand the acoustic environment the human scale is taken into account by definition. This paper will discuss questions that are central to soundscape theory and its application in an increasingly dense urban environment.

  • 14.
    Axelsson, Östen
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Towards guidelines for soundscape design2015In: Book of Proceedings AESOP Prague Annual Congress 2015: Definite Space – Fuzzy Responsibility / [ed] M. Macoun, K. Maier, 2015, p. 802-808Conference paper (Other academic)
    Abstract [en]

    Architects and urban planners request guidelines with regards to soundscape design. In 2013 staff and students at the University of Sheffield, UK, were invited to take part in an electronic survey to investigate what kinds of urban open spaces that they prefer, and how these spaces should be designed with regards to soundscape. Respondents were asked to freely name their favourite outdoor place in Sheffield, and to what extent they found a list of 45 social and recreational activities, as well as a list of 40 sound sources appropriate for this place. A total of 935 individuals completed the questionnaire. A hierarchical cluster analysis of the 45 social and recreational activities revealed three main categories of favourite outdoor places: ‘Urban Park’, ‘City Centre’, and ‘My Space’. For ‘Urban Park’ natural sounds were appropriate when clearly audible, sounds of individuals when moderately audible, sounds of crowds when slightly audible, and technological sounds when inaudible. For ‘City Centre’ sounds of individuals were appropriate when moderately audible, whereas natural sounds, and sounds of crowds were appropriate when slightly audible. Technological sounds were appropriate when inaudible. For ‘My Space’ natural sounds and sounds of individuals were appropriate when moderately audible, whereas sounds of crowds and technological sounds were appropriate when inaudible. This kinds of profiles may serve as design guidelines for urban outdoor spaces with regards to soundscape, based on their social and recreational purposes.

  • 15.
    Borg, Elisabet
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Love, Chantella
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    A demonstration of the Borg centiMax (R) Scale (CR100) for performance evaluation in diving2018In: Nordic Psychology, ISSN 1901-2276, E-ISSN 1904-0016, Vol. 70, no 3, p. 228-244Article in journal (Refereed)
    Abstract [en]

    In many sports, for example in diving, figure skating, or ski jumping, judges subjectively score the performance on a category scale. The level-anchored ratio Borg centiMax (R) Scale (CR100), a general intensity scale from 0 to 100 commonly used for self-appraisal of exertion, is an interesting and valuable alternative. The aim was to explore the possibility of using the Borg centiMax (R) Scale (CR100), for performance evaluation in diving. In Study 1, 16 participants used the centiMax scale and the traditional diving scale (FINA) during a judicial training course on pre-recorded material; and in Study 2, six professional judges used the two scales during qualifying, semi-finals, and finals in the Swedish Championships in orebro, 2012. Strong and significant correlations were obtained between judged performances with the two scales (r >=.8), as well as with contest results (r >=.6). The continuous and finely graded centiMax scale has promising possibilities of improving measurement with both level determinations (how good) and ratio relationships (how much better). With a Borg CR scale, more interesting comparisons can be made, for example, direct comparisons between performance measures and perceptual variables (e.g., perceived exertion and motivation). This is of importance in training and coaching of athletes.

  • 16.
    Borg, Elisabet
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    So what's that on a scale from 1 to 10?2018In: Fechner Day 2018: Proceedings of the 34th Annual Meeting of the International Society for Psychophysics / [ed] Friedrich Müller, Lara Ludwigs, Malizia Kupper, International Society for Psychophysics , 2018, p. 29-35Conference paper (Other academic)
    Abstract [en]

    The Borg CR Scales® are general psychophysical intensity scales intended for measurements of all kinds of perceptions and feelings. They are based on several important principles to give level-anchored ratio data with high interindividual validity. Some of these principles are: numerical coverage of the total subjective dynamic range; quantitative semantics for finding and choosing the best verbal (or pictorial) anchors to obtain high agreement concerning quantitative interpretation and preciseness for valid level-determinations; magnitude estimation for ratio data; congruence between numbers and anchors; Gunnar Borg’s Range Model for interindividual comparisons; and a general point of reference or “fixed star” as a unit (for example a maximal perceived exertion). In this presentation, a short review is given of the rationale behind the Borg RPE scale® and Borg CR Scales®, and some examples of applications with the Borg centiMax Scale® (CR100) are given.

  • 17.
    Borg, Elisabet
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Andersson, Johanna
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Wigert, Elin
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Using psychophysical scaling, the Borg centiMax® Scale (CR100), in questionnaires to study work-related needs and behaviors2017In: Fechner Day 2017: Proceedings of the 33rd Annual Meeting of the International Society for Psychophysics / [ed] Kazuo Ueda, Hiroyuki Ito, Gerard B. Remijn, Yoshitaka Nakajima, Fukuoka, Japan: International Society for Psychophysics , 2017, p. 108-114Conference paper (Other academic)
    Abstract [en]

    In test construction, thorough effort is put into formulating test items. Commonly, however, these are scaled with category or Likert scales. In this study, items from four work-related questionnaires were adapted and scaled with the Borg CR Scale® (CR100, centiMax®), a general intensity scale for level determination with ratio data (Borg & Borg, 2001; Borg, 2007). Tests measured Work-related Basic Need Satisfaction, Organizational Citizenship Behavior, Perceived Organizational Support, and Procedural Justice. In their original forms, Cronbach’s alpha ranged from 0.74–0.98, whereas this study obtained 0.83–0.92 (n=30 and n=81). Adapted to the centiMax scale, Cronbach’s alpha were 0.72–0.95 (n=81 and n=142). For Work-related Basic Need Satisfaction (n=81) and for Organizational Citizenship Behavior (n=30) correlations between centiMax and Likert scales were r=0.79 (p<0,001) and r=0.69 (p<0,001). The centiMax scale worked well and can be recommended with the advantage of more interesting statistical analysis that comes with ratio data.

  • 18.
    Borg, Elisabet
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Sundell, Jessica
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Scaling depression with psychophysical scaling: A comparison between the Borg CR Scale® (CR100, centiMax®) and PHQ-9 on a non-clinical sample2017In: Fechner Day 2017: Proceedings of the 33rd Annual Meeting of the International Society for Psychophysics / [ed] Kazuo Ueda, Hiroyuki Ito, Gerard B. Remijn, Yoshitaka Nakajima, Fukuoka, Japan: International Society for Psychophysics , 2017, p. 101-107Conference paper (Other academic)
    Abstract [en]

    A non-clinical sample (n=71) answered an online survey containing the Patient Health Questionnaire-9 (PHQ-9), that rates the frequency of symptoms of depression (DSM-IV). The questions were also adapted for the Borg CR Scale® (CR100, centiMax®) (0–100), a general intensity scale with verbal anchors from a minimal to a maximal intensity placed in agreement with a numerical scale to give ratio data). The cut-off score of PHQ-9?10 was found to correspond to ?29 cM. Cronbach's alpha for both scales was high (0.87) and the correlation between the scales was r=0.78 (rs=0.69). Despite restriction of range, the cM-scale works well for scaling depression with added possibilities for valuable data analysis.

  • 19. Campitelli, Guillermo
    et al.
    Macbeth, Guillermo
    Ospina, Raydonal
    Marmolejo-Ramos, Fernando
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Three Strategies for the Critical Use of Statistical Methods in Psychological Research2017In: Educational and Psychological Measurement, ISSN 0013-1644, E-ISSN 1552-3888, Vol. 77, no 5, p. 881-895Article in journal (Refereed)
    Abstract [en]

    We present three strategies to replace the null hypothesis statistical significance testing approach in psychological research: (1) visual representation of cognitive processes and predictions, (2) visual representation of data distributions and choice of the appropriate distribution for analysis, and (3) model comparison. The three strategies have been proposed earlier, so we do not claim originality. Here we propose to combine the three strategies and use them not only as analytical and reporting tools but also to guide the design of research. The first strategy involves a visual representation of the cognitive processes involved in solving the task at hand in the form of a theory or model together with a representation of a pattern of predictions for each condition. The second approach is the GAMLSS approach, which consists of providing a visual representation of distributions to fit the data, and choosing the best distribution that fits the raw data for further analyses. The third strategy is the model comparison approach, which compares the model of the researcher with alternative models. We present a worked example in the field of reasoning, in which we follow the three strategies.

  • 20.
    Cancino-Montecinos, Sebastian
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Personality, Social and Developmental Psychology.
    Borg, Elisabet
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Assessing traits in a psychophysical way: Reassessing need for cognition and behavioral inhibition/approach2018In: Fechner Day 2018: Proceedings of the 34th Annual Meeting of the International Society for Psychophysics / [ed] Friedrich Müller, Lara Ludwigs, Malizia Kupper, International Society for Psychophysics , 2018, p. 36-42Conference paper (Other academic)
    Abstract [en]

    The aim of this study was to investigate if different scale formats affect what conclusion one can draw about the prevalence of a specific trait in a sample. More specifically, we compared the original scale format of Need for cognition (1-5) and Behavioral Inhibition/Approach (1-4) with an 11-point scale (0-10), and a psychophysical scale originally developed to measure physical exertion, Borg centiMax Scale®. Forty-eight psychology undergraduate students participated in return for course credit. In a within-subjects design, all participants completed both questionnaires in all three versions. Results revealed that the mean was consistently reaching ceiling effects when using the original scale formats, and the variation was relatively low compared to the other scales. In sum, the results revealed that the scale format plays a significant role in how prevalent a specific trait becomes in a sample.

  • 21.
    Cavazzana, Annachiara
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. University of Padova, Italy; Technische Universität Dresden, Germany.
    Begliomini, Chiara
    Bisiacchi, Patrizia Silvia
    Intentional binding as a marker of agency across the lifespan2017In: Consciousness and Cognition, ISSN 1053-8100, E-ISSN 1090-2376, Vol. 52, p. 104-114Article in journal (Refereed)
    Abstract [en]

    The feeling of control over actions and their external effects is known as Sense of Agency (SoAg). People usually have a distinctive SoAg for events caused by their own actions. However, if the agent is a child or an older person, this feeling of being responsible for the consequences of an action may differ from what an adult would feel. The idea would be that children and elderly may have a reduced SoAg since their frontal lobes are developing or have started to loose their efficiency. The aim of this study was to elucidate whether the SoAg changes across lifespan, using the Intentional Binding (i.e., the temporal attraction between a voluntary action and its sensory consequence) as implicit measure. Data show that children and elderly are characterized by a reduced SoAg as compared to adults. These findings provide a fundamental step in the characterization of SoAg dynamics throughout individuals' lifetime.

  • 22.
    Cavazzana, Annachiara
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Technische Universität Dresden, Germany.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Hoffmann, Eileen
    Hummel, Thomas
    Haehner, Antje
    The vessel's shape influences the smell and taste of cola2017In: Food Quality and Preference, ISSN 0950-3293, E-ISSN 1873-6343, Vol. 59, p. 8-13Article in journal (Refereed)
    Abstract [en]

    People's smell and taste perception is affected by different features of the vessel in which the beverage is served. In this study we focused on the container's shape and we investigated its impact on participants' olfactory and tasting ratings regarding a popular beverage, i.e., cola. We tested 100 healthy participants who evaluated both cola and sparkling water. These two beverages were presented in three different containers: a cola glass, a water glass and a plastic bottle. The results showed the presence of multisensory interactions between the smell and taste of the drinks and the type of vessel in which they were presented. Cola was perceived as more pleasant and intense when served in a typical coca-cola glass as compared to when it was presented in an incongruent container (i.e., water glass or plastic bottle). These results further support the view that our perception is modulated by the shape of the container in which the liquid is presented, strongly influencing the consumer's drinking experience.

  • 23. Cavazzana, Annachiara
    et al.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Münch, Marcus
    Hähner, Antje
    Hummel, Thomas
    Postinfectious olfactory loss: A retrospective study on 791 patients2018In: The Laryngoscope, ISSN 0023-852X, E-ISSN 1531-4995, Vol. 128, no 1, p. 10-15Article in journal (Refereed)
    Abstract [en]

    Objectives/Hypothesis: Postinfectious olfactory loss is among the most common causes of olfactory impairment and has substantial negative impact on patients' quality of life. Recovery rates have been shown to spontaneously improve in most of patients, usually within 2 to 3 years. However, existing studies are limited by small sample sizes and short follow-up. We aimed to assess the prognostic factors for recovery in a large sample of 791 patients with postinfectious olfactory disorders.

    Study Design: Retrospective cohort.

    Methods: We performed a retrospective analysis of 791 patients with postinfectious olfactory loss. Olfactory functions were assessed using the Sniffin' Sticks test at the first and final visits (mean follow-up = 1.94 years).

    Results: Smell test scores improved over time. In particular, patient's age and the odor threshold (T), odor discrimination (D), and odor identification (I) (TDI) score at first visit were significant predictors of the extent of change. The percentage of anosmic and hyposmic patients exhibiting clinically significant improvement was 46% and 35%, respectively.

    Conclusions: This study provides new evidence within the postinfectious olfactory loss literature, shedding light on the prognostic factors and showing that recovery of olfactory function is very frequent, even many years after the infection.

  • 24.
    Cavazzana, Annachiara
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology. TU Dresden, Germany.
    Poletti, Sophia C.
    Guducu, Cagdas
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Hummel, Thomas
    Electro-olfactogram Responses Before and After Aversive Olfactory Conditioning in Humans2018In: Neuroscience, ISSN 0306-4522, E-ISSN 1873-7544, Vol. 373, p. 199-206Article in journal (Refereed)
    Abstract [en]

    The aim of the present study was to investigate whether repetitive aversive odor conditioning induced changes at the level of the peripheral olfactory system in humans. A total of 51 volunteers participated. A pair of indistinguishable odor enantiomers [(+)-rose oxide and (-)-rose oxide] were used as stimuli. During the pre-conditioning, participants' ability to discriminate between the two odors was assessed using a three-alternative, forced-choice discrimination test. In addition, electro-olfactograms ( EOG) from the olfactory epithelium were recorded. Participants underwent three conditioning sessions on consecutive days. The experimental group received an electrical stimulus to the forearm only following (+)-rose oxide presentation, whereas its enantiomer sibling was never paired with the aversive stimulus; the control group did not receive any electrical stimulation. During the post-conditioning session, their ability to discriminate the two enantiomers was assessed again using the discrimination test and EOG recordings were obtained similarly to the pre-conditioning session. Results showed significant differences in the peripheral electrophysiological responses between the conditioned and the unconditioned stimulus, demonstrating contextually induced changes at the level of the first neuron in the olfactory system.

  • 25.
    Cavazzana, Annachiara
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology. TU Dresden, Germany.
    Röhrborn, Anja
    Garthus-Niegel, Susan
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Hummel, Thomas
    Croy, Ilona
    Sensory-specific impairment among older people: An investigation using both sensory thresholds and subjective measures across the five senses2018In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 13, no 8, article id e0202969Article in journal (Refereed)
    Abstract [en]

    Age-related sensory impairment is a slow and gradual progress, which affects multiple modalities. Two contradictory hypotheses exist about the age-related decline of sensory thresholds. The common factor theory assumes one underlying factor-which accounts for the loss of several sensory modalities simultaneously-and the specific factor theory predicts that the sensory decline is uncorrelated between different modalities. In this study, we aimed to explore whether (i) there is a common factor of sensory thresholds in older people, (ii) older people assume that sensory decline in one modality also affects other modalities, (iii) there is a relation between sensory threshold and the subjective assessment of sensory function. This was accomplished by collecting both threshold measures and self-reported ratings for smell, hearing, taste, vision, and touch function in a group of 104 older people (mean age: 67.2 years; SD: 9.85; range: 50-100 years). Results indicated that there was no common factor of sensory thresholds, hence an impairment in one modality did not necessarily imply a shortfall in other modalities. In contrast, our results suggested one or two common factor(s) for the participants' ratings. Participants who reported a diminished function in one sense tended to generalize this rating to the other senses as well. The correspondence between subjective ratings and sensory thresholds was relatively good for vision and audition, although no correlations were observed for the other domains. These findings have implications for clinicians, suggesting that subjective measures should be combined with sensory threshold measurements when evaluating sensory dysfunction. Also, these data convey a positive message for older people and their physicians by showing that loss in one sensory modality does not necessarily generalize to losses across all sensory modalities.

  • 26.
    Cornell Kärnekull, Stina
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Auditory and Olfactory Abilities in Blind and Sighted Individuals: More Similarities than Differences2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Blind individuals face various challenges in everyday life because of the lack of visual input. However, since they need to rely on the non-visual senses for everyday tasks, for instance, when navigating the environment, the question has been raised as to whether perceptual and cognitive abilities in these senses may be enhanced. This question has mainly been addressed for auditory and tactile abilities, whereas there is considerably less research into the chemical senses, such as olfaction. However, to determine whether blindness has general effects, different senses and types of tasks should be studied, preferably in one and the same study. Therefore, throughout this thesis, analogous auditory and olfactory tasks that varied in cognitive complexity were studied. In Study I, absolute thresholds, discrimination, identification, episodic recognition (i.e., after a short retention interval), metacognition, and self-reported imagery ability were assessed in early blind, late blind, and sighted participants. The only objective measure on which the blind and sighted clearly differed was the auditory episodic recognition task. The fact that early blind but not late blind participants displayed better memory than the sighted suggested that the onset age of blindness may be important for whether this ability becomes enhanced following blindness. Furthermore, the early blind participants rated their auditory imagery ability higher than the sighted, whereas both early and late blind participants rated their olfactory imagery ability higher than the sighted. In Study II, the participants from Study I were followed up after more than a year and retested on auditory and olfactory episodic recognition and identification. This time, the early blind displayed no advantage over the sighted, suggesting that the influence of blindness on auditory memory may be modulated by the length of the retention interval. Moreover, in line with Study I, identification of sounds and odors was similar in the three groups. In Study III, early blind and sighted participants were examined for potential differences in autobiographical memory as evoked by sounds and odors, respectively. Blindness did not influence the reminiscence bumps (i.e., memory peaks in certain age intervals) or have any clear impact on the number of retrieved sound- or odor-evoked memories. Taken together, the present findings indicate that blindness has no general influence across tasks or sensory modalities. Rather, specific auditory abilities, such as episodic memory, may be enhanced in blind individuals, although such effects may depend on both the onset age of blindness and the length of the retention interval. In conclusion, for most perceptual and cognitive abilities examined, performance seemed unaffected by blindness.

     

  • 27.
    Cornell Kärnekull, Stina
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Arshamian, Artin
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Karolinska Institutet, Sweden; Radboud University, Netherlands.
    Nilsson, Mats E.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    From Perception to Metacognition: Auditory and Olfactory Functions in Early Blind, Late Blind, and Sighted Individuals2016In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 7, article id 1450Article in journal (Refereed)
    Abstract [en]

    Although evidence is mixed, studies have shown that blind individuals perform better than sighted at specific auditory, tactile, and chemosensory tasks. However, few studies have assessed blind and sighted individuals across different sensory modalities in the same study. We tested early blind (n = 15), late blind (n = 15), and sighted (n = 30) participants with analogous olfactory and auditory tests in absolute threshold, discrimination, identification, episodic recognition, and metacognitive ability. Although the multivariate analysis of variance (MANOVA) showed no overall effect of blindness and no interaction with modality, follow-up between-group contrasts indicated a blind-over-sighted advantage in auditory episodic recognition, that was most pronounced in early blind individuals. In contrast to the auditory modality, there was no empirical support for compensatory effects in any of the olfactory tasks. There was no conclusive evidence for group differences in metacognitive ability to predict episodic recognition performance. Taken together, the results showed no evidence of an overall superior performance in blind relative sighted individuals across olfactory and auditory functions, although early blind individuals exceled in episodic auditory recognition memory. This observation may be related to an experience-induced increase in auditory attentional capacity.

  • 28.
    Cornell Kärnekull, Stina
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Arshamian, Artin
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Karolinska Institutet, Sweden; Radboud University, Netherlands.
    Nilsson, Mats E.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    The Effect of Blindness on Long-Term Episodic Memory for Odors and Sounds2018In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 9, article id 1003Article in journal (Refereed)
    Abstract [en]

    We recently showed that compared with sighted, early blind individuals have better episodic memory for environmental sounds, but not odors, after a short retention interval (similar to 8 - 9 min). Few studies have investigated potential effects of blindness on memory across long time frames, such as months or years. Consequently, it was unclear whether compensatory effects may vary as a function of retention interval. In this study, we followed-up participants (N = 57 out of 60) approximately 1 year after the initial testing and retested episodic recognition for environmental sounds and odors, and identification ability. In contrast to our previous findings, the early blind participants (n = 14) performed at a similar level as the late blind (n = 13) and sighted (n = 30) participants for sound recognition. Moreover, the groups had similar recognition performance of odors and identification ability of odors and sounds. These findings suggest that episodic odor memory is unaffected by blindness after both short and long retention intervals. However, the effect of blindness on episodic memory for sounds may vary as a function of retention interval, such that early blind individuals have an advantage over sighted across short but not long time frames. We speculate that the finding of a differential effect of blindness on auditory episodic memory across retention intervals may be related to different memory strategies at initial and follow-up assessments. In conclusion, this study suggests that blindness does not influence auditory or olfactory episodic memory as assessed after a long retention interval.

  • 29.
    Cornell Kärnekull, Stina
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Jönsson, Fredrik U.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Cognitive psychology.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Affected by Smells?: Environmental Chemical Responsivity Predicts Odor Perception2011In: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 36, no 7, p. 641-648Article in journal (Refereed)
    Abstract [en]

    Strong negative reactions, physical symptoms, and behavioral disruptions due to environmental odors are common in the adult population. We investigated relationships among such environmental chemosensory responsivity (CR), personality traits, affective states, and odor perception. Study 1 showed that CR and neuroticism were positively correlated in a sample of young adults (n = 101), suggesting that persons high in neuroticism respond more negatively to environmental odors. Study 2 explored the relationships among CR, noise responsivity (NR), neuroticism, and odor perception (i.e., pleasantness and intensity) in a subset of participants (n = 40). High CR was associated with high NR. Regression analyses indicated that high CR predicted higher odor intensity ratings and low olfactory threshold (high sensitivity) predicted lower pleasantness ratings. However, neuroticism was not directly associated with odor ratings or thresholds. Overall, the results suggest that CR and odor thresholds predict perceptual ratings of odors and that high CR is associated with nonchemosensory affective traits.

  • 30.
    Cornell Kärnekull, Stina
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Jönsson, Fredrik U.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Cognitive psychology.
    Willander, Johan
    Stockholm University, Faculty of Social Sciences, Department of Psychology. University College of Gävle, Sweden.
    Sikström, Sverker
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Long-Term Memory for Odors: Influences of Familiarity and Identification Across 64 Days2015In: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 40, no 4, p. 259-267Article in journal (Refereed)
    Abstract [en]

    Few studies have investigated long-term odor recognition memory, although some early observations suggested that the forgetting rate of olfactory representations is slower than for other sensory modalities. This study investigated recognition memory across 64 days for high and low familiar odors and faces. Memory was assessed in 83 young participants at 4 occasions; immediate, 4, 16, and 64 days after encoding. The results indicated significant forgetting for odors and faces across the 64 days. The forgetting functions for the 2 modalities were not fundamentally different. Moreover, high familiar odors and faces were better remembered than low familiar ones, indicating an important role of semantic knowledge on recognition proficiency for both modalities. Although odor recognition was significantly better than chance at the 64 days testing, memory for the low familiar odors was relatively poor. Also, the results indicated that odor identification consistency across sessions, irrespective of accuracy, was positively related to successful recognition.

  • 31.
    Cortes, Diana S.
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Biological psychology.
    Skragge, Michael
    Stockholm University, Faculty of Social Sciences, Department of Psychology.
    Döllinger, Lillian
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Clinical psychology.
    Laukka, Petri
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Cognitive psychology.
    Fischer, Håkan
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Biological psychology.
    Nilsson, Mats E.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Hovey, Daniel
    Westberg, Lars
    Larsson, Marcus
    Granqvist, Pehr
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Personality, Social and Developmental Psychology.
    Mixed support for a causal link between single dose intranasal oxytocin and spiritual experiences: opposing effects depending on individual proclivities for absorption2018In: Social Cognitive & Affective Neuroscience, ISSN 1749-5016, E-ISSN 1749-5024, Vol. 13, no 9, p. 921-932Article in journal (Refereed)
    Abstract [en]

    Intranasal oxytocin (OT) has previously been found to increase spirituality, an effect moderated by OT-related genotypes. This pre-registered study sought to conceptually replicate and extend those findings. Using a single dose of intranasal OT vs placebo (PL), we investigated experimental treatment effects, and moderation by OT-related genotypes on spirituality, mystical experiences, and the sensed presence of a sentient being. A more exploratory aim was to test for interactions between treatment and the personality disposition absorption on these spirituality-related outcomes. A priming plus sensory deprivation procedure that has facilitated spiritual experiences in previous studies was used. The sample (N = 116) contained both sexes and was drawn from a relatively secular context. Results failed to conceptually replicate both the main effects of treatment and the treatment by genotype interactions on spirituality. Similarly, there were no such effects on mystical experiences or sensed presence. However, the data suggested an interaction between treatment and absorption. Relative to PL, OT seemed to enhance spiritual experiences in participants scoring low in absorption and dampen spirituality in participants scoring high in absorption.

  • 32. Croy, Ilona
    et al.
    Zehner, Cora
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Zucco, Gesualdo M.
    Hummel, Thomas
    Test-Retest Reliability and Validity of the Sniffin' TOM Odor Memory Test2015In: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 40, no 3, p. 173-179Article in journal (Refereed)
    Abstract [en]

    Few attempts have been made to develop an olfactory test that captures episodic retention of olfactory information. Assessment of episodic odor memory is of particular interest in aging and in the cognitively impaired as both episodic memory deficits and olfactory loss have been targeted as reliable hallmarks of cognitive decline and impending dementia. Here, 96 healthy participants (18-92 years) and an additional 19 older people with mild cognitive impairment were tested (73-82 years). Participants were presented with 8 common odors with intentional encoding instructions that were followed by a yes-no recognition test. After recognition completion, participants were asked to identify all odors by means of free or cued identification. A retest of the odor memory test (Sniffin' TOM = test of odor memory) took place 17 days later. The results revealed satisfactory test-retest reliability (0.70) of odor recognition memory. Both recognition and identification performance were negatively affected by age and more pronounced among the cognitively impaired. In conclusion, the present work presents a reliable, valid, and simple test of episodic odor recognition memory that may be used in clinical groups where both episodic memory deficits and olfactory loss are prevalent preclinically such as Alzheimer's disease.

  • 33. Dåderman, Anna M.
    et al.
    Hellström, Åke
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Interrater Reliability of Psychopathy Checklist–Revised: Results on Multiple Analysis Levels for a Sample of Patients Undergoing Forensic Psychiatric Evaluation2018In: Criminal justice and behavior, ISSN 0093-8548, E-ISSN 1552-3594, Vol. 45, no 2, p. 234-263Article in journal (Refereed)
    Abstract [en]

    Scores from the Psychopathy Checklist–Revised (PCL-R) are used to support decisions regarding personal liberty. In our study, performed in an applied forensic psychiatric setting, intraclass correlation coefficients (ICC) for absolute agreement, single rater (ICCA1) were .89 for the total score, .82 for Factor 1, .88 for Factor 2, and .78 to .86 for the four facets. These results stand in contrast to lower reliabilities found in a majority of field studies. Disagreement among raters made a low contribution (0%-5%) to variability of scores on the total score, factor, and facet level. For individual items, ICCA1 varied from .38 to .94, with >.80 for seven of the 20 items. Items 17 (“Many short-term marital relationships”) and 19 (“Revocation of conditional release”) showed very low reliabilities (.38 and .43, respectively). The importance of knowledge about factors that can affect scoring of forensic instruments (e.g., education, training, experience, motivation, raters’ personality, and quality of file data) is emphasized.

  • 34. East, Brett S.
    et al.
    Fleming, Gloria
    Peng, Kathy
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Nathan S. Kline Institute, USA; New York University School of Medicine, USA.
    Levy, Efrat
    Mathews, Paul M.
    Wilson, Donald A.
    Human Apolipoprotein E Genotype Differentially Affects Olfactory Behavior and Sensory Physiology in Mice2018In: Neuroscience, ISSN 0306-4522, E-ISSN 1873-7544, Vol. 380, p. 103-110Article in journal (Refereed)
    Abstract [en]

    Apolipoprotein E (ApoE) is an important lipid carrier in both the periphery and the brain. The ApoE epsilon 4 allele (ApoE4) is the single most important genetic risk-factor for Alzheimer's disease (AD) while the epsilon 2 allele (ApoE2) is associated with a lower risk of AD-related neurodegeneration compared to the most common variant, epsilon 3 (ApoE3). ApoE genotype affects a variety of neural circuits; however, the olfactory system appears to provide early biomarkers of ApoE genotype effects. Here, we directly compared olfactory behavior and olfactory system physiology across all three ApoE genotypes in 6-month- and 12-month-old mice with targeted replacement for the human ApoE2, ApoE3, or ApoE4 genes. Odor investigation and habituation were assessed, along with, olfactory bulb and piriform cortical local field potential activity. The results demonstrate that while initial odor investigation was unaffected by ApoE genotype, odor habituation was impaired in E4 relative to E2 mice, with E3 mice intermediate in function. There was also significant deterioration of odor habituation from 6 to 12 months of age regardless of the ApoE genotype. Olfactory system excitability and odor responsiveness were similarly determined by ApoE genotype, with an ApoE4 > ApoE3 > ApoE2 excitability ranking. Although motivated behavior is influenced by many processes, hyper-excitability of ApoE4 mice may contribute to impaired odor habituation, while hypo-excitability of ApoE2 mice may contribute to its protective effects. Given that these ApoE mice do not have AD pathology, our results demonstrate how ApoE affects the olfactory system at early stages, prior to the development of AD.

  • 35.
    Eklund, Rasmus
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Wiens, Stefan
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Visual awareness negativity is an early neural correlate of awareness: A preregistered study with two Gabor sizes2018In: Cognitive, Affective, & Behavioral Neuroscience, ISSN 1530-7026, E-ISSN 1531-135X, Vol. 18, no 1, p. 176-188Article in journal (Refereed)
    Abstract [en]

    Electrophysiological recordings are commonly used to study the neural correlates of consciousness in humans. Previous research is inconsistent as to whether awareness can be indexed with visual awareness negativity (VAN) at about 200 ms or if it occurs later. The present study was preregistered with two main aims: First, to provide independent evidence for or against the presence of VAN, and second, to study whether stimulus size may account for the inconsistent findings. Subjects were shown low-contrast Gaussian filtered gratings (Gabor patches) in the four visual quadrants. Gabor size (large and small) was varied in different sessions and calibrated to each subject’s threshold of visual awareness. Event-related potentials were derived from trials in which subjects localized the Gabors correctly to capture the difference between trials in which they reported awareness versus no awareness. Bayesian analyses revealed very strong evidence for the presence of VAN for both Gabor sizes. However, there was no evidence for or against an effect of stimulus size. The present findings provide evidence for VAN as an early neural correlate of awareness.

  • 36.
    Ekström, Ingrid
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Human olfaction: Associations with longitudinal assessment of episodic memory, dementia, and mortality risk2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    A declining sense of smell is a common feature in older age. Above and beyond diminished smelling capacity due to normal processes of human aging, impairments in olfactory function have also been linked to numerous ill-health related outcomes, such as cognitive dysfunctions, dementia pathology and even an increased risk of death. Based on population-based data from the Swedish Betula Prospective Cohort Study, the aim of this thesis was to further our understanding regarding the role of olfaction in long-term memory decline, dementia, and mortality. Furthermore, this thesis investigated the predictive utility of self-reported olfactory dysfunction for assessing the risk of conversion to later dementia and to mortality, as well as the predictive utility of long-term subjective olfactory decline for an actual long-term decline in odor function. Study I explored associations of olfactory deficits with memory decline and found that impairments in an odor identification test were related to an ongoing and long-term decline in episodic memory only in carriers of the e4 allele of the Apolipoprotein E, a genetic risk factor for Alzheimer’s disease. Study II investigated the predictive utility of olfactory ability for conversion to common forms of dementia in participants with intact baseline cognition during a follow-up time-span of 10 years. The results showed that lower odor identification scores, as well as subjectively assessed odor impairment, were associated with an increased risk for dementia conversion, and that the effects of objective and subjective odor function were cumulative. Study III investigated whether olfactory ability could predict mortality and showed that lower odor identification scores, as well as subjective odor impairments, were associated with an elevated risk of death within a follow-up time-span of approximately 10 years. Crucially, this effect could not be explained by dementia conversion prior to death. Study IV showed that a subjectively assessed long-term and ongoing olfactory decline was predictive of an objectively assessed long-term and ongoing decline in odor function. Subjective olfactory impairments might thus be indicative of an actual olfactory decline in older adults. Overall, the findings of this thesis indicate that sense of smell is closely related to processes of memory decline and dementia as well as mortality in older adults. Furthermore, the results of these investigations shed a new light on the role of subjectively experienced olfactory decline, which might reflect an actual intra-individual change in olfactory ability in older adults.

  • 37.
    Ekström, Ingrid
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Sjölund, Sara
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Nordin, Steven
    Nordin Adolfsson, Annelie
    Adolfsson, Rolf
    Nilsson, Lars-Göran
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Cognitive psychology.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics. Swedish Collegium for Advanced Study, Sweden.
    Smell Loss Predicts Mortality Risk Regardless of Dementia Conversion2017In: Journal of The American Geriatrics Society, ISSN 0002-8614, E-ISSN 1532-5415, Vol. 65, no 6, p. 1238-1243Article in journal (Refereed)
    Abstract [en]

    Objectives

    To determine whether dementia could explain the association between poor olfactory performance and mortality risk within a decade-long follow-up period.

    Design

    Prospective cohort study.

    Setting

    Betula Study, Umeå, Sweden.

    Participants

    A population-based sample of adult participants without dementia at baseline aged 40 to 90 (N = 1,774).

    Measurements

    Olfactory performance using the Scandinavian Odor-Identification Test (SOIT) and self-reported olfactory function; several social, cognitive, and medical risk factors at baseline; and incident dementia during the following decade.

    Results

    Within the 10-year follow-up, 411 of 1,774 (23.2%) participants had died. In a Cox model, the association between higher SOIT score and lower mortality was significant (hazard ratio (HR) = 0.74 per point interval, 95% confidence interval (CI) = 0.71-0.77, P < .001). The effect was attenuated, but remained significant, after controlling for age, sex, education, and health-related and cognitive variables (HR = 0.92, 95% CI = 0.87-0.97, P = .001). The association between SOIT score and mortality was retained after controlling for dementia conversion before death (HR = 0.92, 95% CI = 0.87-0.97, P = .001). Similar results were obtained for self-reported olfactory dysfunction.

    Conclusion

    Poor odor identification and poor self-reported olfactory function are associated with greater likelihood of future mortality. Dementia does not attenuate the association between olfactory loss and mortality, suggesting that olfactory loss might mark deteriorating health, irrespective of dementia.

  • 38.
    Ekström, Ingrid
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Josefsson, Maria
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Rönnlund, Michael
    Nordin, Steven
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Subjective Olfactory Loss in Older Adults Concurs with Long-Term Odor Identification Decline2019In: Chemical Senses, ISSN 0379-864X, E-ISSN 1464-3553, Vol. 44, no 2, p. 105-112Article in journal (Refereed)
    Abstract [en]

    Olfactory impairments may provide early indications of future health outcomes in older adults. Thus, an important question concerns whether these impairments can be self-assessed. Previous findings of cross-sectional studies indicate low correlations between self-reported olfactory function and objective olfactory performance. On the other hand, subjective olfactory impairments predict future dementia and mortality in longitudinal settings. No previous study has assessed the relationship between subjectively and objectively measured decline in olfaction over time. Based on data for 903 older adults derived from the Betula Study, a Swedish population-based prospective study, we tested whether rate-of-change in odor identification could be predicted from subjective olfactory decline over a time span of 10 years during which subjective and objective odor functions were assessed on 2 or 3 test occasions. Indeed, we found that participants who experienced subjective olfactory decline over the study period also had significantly steeper rates of decline in odor identification, even after adjusting for demographic, cognitive, and genetic factors that previously have been associated with performance in odor identification. This association was, however, not present in a subsample with baseline cognitive impairment. We interpret these results as evidence that when asked about whether they have an olfactory impairment or not, older persons are assessing intraindividual olfactory changes, rather than interindividual differences. Our results indicate that subjective olfactory loss reflects objective olfactory decline in cognitively intact older adults. This association might be harnessed to predict health outcomes and highlights the need to develop effective olfactory self-assessments.

  • 39. Eyben, Florian
    et al.
    Scherer, Klaus R.
    Schuller, Björn W.
    Sundberg, Johan
    André, Elisabeth
    Busso, Carlos
    Devillers, Laurence Y.
    Epps, Julien
    Laukka, Petri
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Narayanan, Shrikanth S.
    Truong, Khiet P.
    The Geneva Minimalistic Acoustic Parameter Set (GeMAPS) for Voice Research and Affective Computing2016In: IEEE Transactions on Affective Computing, ISSN 1949-3045, E-ISSN 1949-3045, Vol. 7, no 2, p. 190-202Article in journal (Refereed)
    Abstract [en]

    Work on voice sciences over recent decades has led to a proliferation of acoustic parameters that are used quite selectively and are not always extracted in a similar fashion. With many independent teams working in different research areas, shared standards become an essential safeguard to ensure compliance with state-of-the-art methods allowing appropriate comparison of results across studies and potential integration and combination of extraction and recognition systems. In this paper we propose a basic standard acoustic parameter set for various areas of automatic voice analysis, such as paralinguistic or clinical speech analysis. In contrast to a large brute-force parameter set, we present a minimalistic set of voice parameters here. These were selected based on a) their potential to index affective physiological changes in voice production, b) their proven value in former studies as well as their automatic extractability, and c) their theoretical significance. The set is intended to provide a common baseline for evaluation of future research and eliminate differences caused by varying parameter sets or even different implementations of the same parameters. Our implementation is publicly available with the openSMILE toolkit. Comparative evaluations of the proposed feature set and large baseline feature sets of INTERSPEECH challenges show a high performance of the proposed set in relation to its size.

  • 40. Fernaeus, Sven-Erik
    et al.
    Hellström, Åke
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Conceptual elaboration versus direct lexical access in WAIS-similarities: differential effects of white-matter lesions and gray matter volumes2018In: Aging, Neuropsychology and Cognition, ISSN 1382-5585, E-ISSN 1744-4128, Vol. 25, no 6, p. 893-903Article in journal (Refereed)
    Abstract [en]

    Wechsler Adult Intelligence Scale (WAIS) subscale Similarities have been classified as a test of either verbal comprehension or of inductive reasoning. The reason may be that items divide into two categories. We tested the hypothesis of heterogeneity of items in WAIS-Similarities. Consecutive patients at a memory clinic and healthy controls participated in the study. White-matter hyperintensities (WMHs) and normalized temporal lobe volumes were measured based on Magnetic resonance Imaging (MRI), and tests of verbal memory and attention were used in addition to WAIS-Similarities to collect behavioural data. Factor analysis supported the hypothesis that two factors are involved in the performance of WAIS-similarities: (1) semiautomatic lexical access and (2) conceptual elaboration. These factors were highly correlated but provided discriminative diagnostic information: In logistic regression analyses, scores of the lexical access factor and of the conceptual elaboration factor discriminated patients with mild cognitive impairment from Alzheimer’s disease patients and from healthy controls, respectively. High scores of WMH, indicating periventricular white-matter lesions, predicted factor scores of direct lexical access but not those of conceptual elaboration, which were predicted only by medial and lateral temporal lobe volumes.

  • 41. Finkel, Deborah
    et al.
    Reynolds, Chandra A.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Gatz, Margaret
    Pedersen, Nancy L.
    Both Odor Identification and ApoE-epsilon 4 Contribute to Normative Cognitive Aging2011In: Psychology and Aging, ISSN 0882-7974, E-ISSN 1939-1498, Vol. 26, no 4, p. 872-883Article in journal (Refereed)
    Abstract [en]

    Research indicates that apoliprotein E (ApoE) plays a role in the development of Alzheimer's disease (AD) and possibly in the cognitive decline associated with normative aging. More recently, researchers have shown that ApoE is expressed in olfactory brain structures, and a relationship among ApoE, AD, and olfactory function has been proposed. In the current analyses, we investigated the contribution of ApoE and odor identification in decline trajectories associated with normative cognitive aging in various domains, using longitudinal data on cognitive performance available from the Swedish Adoption/Twin Study of Aging. Data on both ApoE status and olfactory functioning were available from 455 individuals ranging in age from 50 to 88 years at the first measurement occasion. Odor identification was measured via a mailed survey. Cognitive performance was assessed in up to 5 waves of in-person testing covering a period of 16 years. Latent growth curve analyses incorporating odor identification and ApoE status indicated a main effect of odor identification on the performance level in three cognitive domains: verbal, memory, and speed. A main effect of ApoE on rates of decline after age 65 was found for verbal, spatial, and speed factors. The consistency of results across cognitive domains provides support for theories that posit central nervous system-wide origins of the olfaction-cognition-ApoE relationship; however, olfactory errors and APOE epsilon 4 show unique and differential effects on cognitive trajectory features.

  • 42. Flohr, E. L. R.
    et al.
    Arshamian, Artin
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Wieser, M. J.
    Hummel, C.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Muehlberger, A.
    Hummel, T.
    THE FATE OF THE INNER NOSE: ODOR IMAGERY IN PATIENTS WITH OLFACTORY LOSS2014In: Neuroscience, ISSN 0306-4522, E-ISSN 1873-7544, Vol. 268, p. 118-127Article in journal (Refereed)
    Abstract [en]

    Cerebral activations during olfactory mental imagery are fairly well investigated in healthy participants but little attention has been given to olfactory imagery in patients with olfactory loss. To explore whether olfactory loss leads to deficits in olfactory imagery, neural responses using functional magnetic resonance imaging (fMRI) and self-report measures were investigated in 16 participants with acquired olfactory loss and 19 control participants. Participants imagined both pleasant and unpleasant odors and their visual representations. Patients reported less vivid olfactory but not visual images than controls. Results from neuroimaging revealed that activation patterns differed between patients and controls. While the control group showed stronger activation in olfactory brain regions for unpleasant compared to pleasant odors, the patient group did not. Also, activation in critical areas for olfactory imagery was correlated with the duration of olfactory dysfunction, indicating that the longer the duration of dysfunction, the more the attentional resources were employed. This indicates that participants with olfactory loss have difficulties to perform olfactory imagery in the conventional way. Regular exposure to olfactory information may be necessary to maintain an olfactory imagery capacity.

  • 43. Gall, Kelly
    et al.
    van Zutven, Kim
    Lindström, Joanna
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Bentley, Caroline
    Gratwick-Sarll, Kassandra
    Harrison, Carmel
    Lewis, Vivienne
    Mond, Jonathan
    Obesity and emotional well-being in adolescents: Roles of body dissatisfaction, loss of control eating, and self-rated health2016In: Obesity, ISSN 1930-7381, E-ISSN 1930-739X, Vol. 24, no 4, p. 837-842Article in journal (Refereed)
    Abstract [en]

    ObjectiveWeak or inconsistent association between obesity and impairment in emotional well-being in population-based samples has led to efforts to identify mediating variables. This study examined the relative importance of body dissatisfaction (BD), loss of control (LOC) eating, and self-rated health (SRH) in mediating the association between obesity and impairment in emotional well-being in a school-based sample of adolescents (boys, n=437; girls, n=950). MethodsModerated mediation analysis was employed to assess the relative importance of the putative mediating variables and moderation of mediation effects by sex following the methods suggested by Hayes and coworkers. ResultsBD and SRH, but not LOC eating, were found to mediate the association between obesity and impairment in emotional well-being. Stronger mediation effects were observed for BD than for SRH. None of these results was moderated by sex. ConclusionsThe findings suggest that it may be important to target BD in obesity prevention and treatment programs in order to reduce the adverse impact of excess body weight on young people's emotional well-being.

  • 44.
    Gerholm, Tove
    et al.
    Stockholm University, Faculty of Humanities, Department of Linguistics.
    Hörberg, Thomas
    Stockholm University, Faculty of Humanities, Department of Linguistics, General Linguistics. Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Tonér, Signe
    Stockholm University, Faculty of Humanities, Department of Linguistics.
    Kallioinen, Petter
    Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.
    Frankenberg, Sofia
    Stockholm University, Faculty of Social Sciences, Department of Child and Youth Studies.
    Kjällander, Susanne
    Stockholm University, Faculty of Social Sciences, Department of Child and Youth Studies.
    Palmer, Anna
    Stockholm University, Faculty of Social Sciences, Department of Child and Youth Studies.
    Lenz Taguchi, Hillevi
    Stockholm University, Faculty of Social Sciences, Department of Child and Youth Studies.
    A protocol for a three-arm cluster randomized controlled superiority trial investigating the effects of two pedagogical methodologies in Swedish preschool settings on language and communication, executive functions, auditive selective attention, socioemotional skills and early maths skills2018In: BMC Psychology, E-ISSN 2050-7283, Vol. 6, article id 29Article in journal (Refereed)
    Abstract [en]

    Background

    During the preschool years, children develop abilities and skills in areas crucial for later success in life. These abilities include language, executive functions, attention, and socioemotional skills. The pedagogical methods used in preschools hold the potential to enhance these abilities, but our knowledge of which pedagogical practices aid which abilities, and for which children, is limited. The aim of this paper is to describe an intervention study designed to evaluate and compare two pedagogical methodologies in terms of their effect on the above-mentioned skills in Swedish preschool children.

    Method

    The study is a randomized control trial (RCT) where two pedagogical methodologies were tested to evaluate how they enhanced children’s language, executive functions and attention, socioemotional skills, and early maths skills during an intensive 6-week intervention. Eighteen preschools including 28 units and 432 children were enrolled in a municipality close to Stockholm, Sweden. The children were between 4;0 and 6;0 years old and each preschool unit was randomly assigned to either of the interventions or to the control group. Background information on all children was collected via questionnaires completed by parents and preschools. Pre- and post-intervention testing consisted of a test battery including tests on language, executive functions, selective auditive attention, socioemotional skills and early maths skills. The interventions consisted of 6 weeks of intensive practice of either a socioemotional and material learning paradigm (SEMLA), for which group-based activities and interactional structures were the main focus, or an individual, digitally implemented attention and math training paradigm, which also included a set of self-regulation practices (DIL). All preschools were evaluated with the ECERS-3.

    Discussion

    If this intervention study shows evidence of a difference between group-based learning paradigms and individual training of specific skills in terms of enhancing children’s abilities in fundamental areas like language, executive functions and attention, socioemotional skills and early math, this will have big impact on the preschool agenda in the future. The potential for different pedagogical methodologies to have different impacts on children of different ages and with different backgrounds invites a wider discussion within the field of how to develop a preschool curriculum suited for all children.

  • 45. Giertuga, Katarzyna
    et al.
    Zakrzewska, Marta
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Bielecki, Maksymilian
    Racicka-Pawlukiewicz, Ewa
    Kossut, Malgorzata
    Cybulska-Klosowicz, Anita
    Age-Related Changes in Resting-State EEG Activity in Attention Deficit/Hyperactivity Disorder: A Cross-Sectional Study2017In: Frontiers in Human Neuroscience, ISSN 1662-5161, E-ISSN 1662-5161, Vol. 11, article id 285Article in journal (Refereed)
    Abstract [en]

    Numerous studies indicate that attention deficit/hyperactivity disorder (ADHD) is related to some developmental trends, as its symptoms change widely over time. Nevertheless, the etiology of this phenomenon remains ambiguous. There is a disagreement whether ADHD is related to deviations in brain development or to a delay in brain maturation. The model of deviated brain development suggests that the ADHD brain matures in a fundamentally different way, and does not reach normal maturity at any developmental stage. On the contrary, the delayed brain maturation model assumes that the ADHD brain indeed matures in a different, delayed way in comparison to healthy age-matched controls, yet eventually reaches proper maturation. We investigated age-related changes in resting-state EEG activity to find evidence to support one of the alternative models. A total of 141 children and teenagers participated in the study; 67 diagnosed with ADHD and 74 healthy controls. The absolute power of delta, theta, alpha, and beta frequency bands was analyzed. We observed a significant developmental pattern of decreasing absolute EEG power in both groups. Nonetheless, ADHD was characterized by consistently lower absolute EGG power, mostly in the theta frequency band, in comparison to healthy controls. Our results are in line with the deviant brain maturation theory of ADHD, as the observed effects of age-related changes in EEG power are parallel but different in the two groups.

  • 46.
    Hedner, Margareta
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Arnold, Nancy
    Department of Otorhinolaryngology, University of Dresden Medical School, Dresden, Germany.
    Zucco, Gesualdo M.
    University of Padova, Padova, Italy.
    Hummel, Thomas
    Department of Otorhinolaryngology, University of Dresden Medical School, Dresden, Germany.
    Cognitive factors in odor detection, odor discrimination, and odor identification tasks2010In: Journal of Clinical and Experimental Neuropsychology, ISSN 1380-3395, E-ISSN 1744-411X, Vol. 32, no 10, p. 1062-1067Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to determine cognitive correlates of olfactory performance across three different tasks. A total of 170 men and women (30-87 years of age) were assessed in olfactory sensitivity, discrimination, and identification. Also, participants were tested in a range of cognitive tests covering executive functioning, semantic memory, and episodic memory. Hierarchical regression analyses showed that proficiency in executive functioning and semantic memory contributed significantly to odor discrimination and identification performance, whereas all of the cognitive factors proved unrelated to performance in the odor threshold test. This pattern of outcome suggests that an individual's cognitive profile exerts a reliable influence on performance in higher order olfactory tasks.

  • 47.
    Hedner, Margareta
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Nilsson, Lars-Göran
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Cognitive psychology.
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Bergman, Olle
    Department of Pharmacology, Göteborg University, Göteborg, Sweden.
    Eriksson, Elias
    Department of Pharmacology, Göteborg University, Göteborg, Sweden.
    Nyberg, Lars
    Department of Radiation Sciences and Integrative Medical Biology, Umeå, Sweden.
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Age-Related Olfactory Decline is Associated with the BDNF Val66met Polymorphism: Evidence from a Population-Based Study2010In: Frontiers in Aging Neuroscience, ISSN 1663-4365, Vol. 2, no 7, p. 24-Article in journal (Refereed)
    Abstract [en]

    The present study investigates the effect of the brain-derived neurotrophic factor (BDNF) val66met polymorphism on change in olfactory function in a large scale, longitudinal population-based sample (n = 836). The subjects were tested on a 13 item force-choice odor identification test on two test occasions over a 5-year-interval. Sex, education, health-related factors, and semantic ability were controlled for in the statistical analyses. Results showed an interaction effect of age and BDNF val66met on olfactory change, such that the magnitude of olfactory decline in the older age cohort (70–90years old at baseline) was larger for the val homozygote carriers than for the met carriers. The older met carriers did not display larger age-related decline in olfactory function compared to the younger group. The BDNF val66met polymorphism did not affect the rate of decline in the younger age cohort (45–65years). The findings are discussed in the light of the proposed roles of BDNF in neural development and maintenance.

  • 48.
    Hellström, Åke
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Rammsayer, Thomas
    Effects of sensitivity, bias, and stimulus presentation order in comparative discrimination of interval durations: A univariate and multivariate study2018In: Fechner Day 2018: Proceedings of the 34th Annual Meeting of the International Society for Psychophysics / [ed] Friedrich Müller, Lara Ludwigs, Malizia Kupper, International Society for Psychophysics , 2018, p. 266-271Conference paper (Other academic)
    Abstract [en]

    According to the sensation weighting model (SWM), stimulus magnitude level dependent time-order errors (TOEs) in stimulus comparison arise from uneven stimulus weighting, levered by asymmetry of an internal reference level; the weighting also causes discriminability to depend on the presentation order of standard (St) and comparison stimulus (Co) (the Type B effect). Both of these effects, as well as judgment bias, determine the measured difference limen (DL). In two duration discrimination experiments, these contributions to the DL were explored, using an adaptive staircase method. The compared intervals were filled auditory or empty visual. The interstimulus interval was 900 ms and the St duration 100, 215, 464, or 1000 ms in a blocked design. In univariate as well as multivariate analyses, the SWM’s predictions were confirmed on the individual level, and the contributions of sensitivity, bias, and weighting in building the DL were assessed.

  • 49.
    Hörberg, Thomas
    Stockholm University, Faculty of Humanities, Department of Linguistics, General Linguistics. Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Functional motivations behind direct object fronting in written Swedish: A corpus-distributional account2018In: Glossa: a journal of general linguistics, E-ISSN 2397-1835, Vol. 3, no 1, article id 81Article in journal (Refereed)
    Abstract [en]

    In Swedish, grammatical functions are primarily encoded by word order. In prototypical transitive sentences, the subject precedes the direct object. However, Swedish also allows for fronting of the direct object, although such sentences are potentially ambiguous with respect to grammatical functions. This study therefore investigates direct object fronting in written Swedish with respect to 1) which functions this construction serves and 2) whether the use of direct object fronting is dispreferred when the grammatical functions cannot be determined on other information types. These questions are investigated on the basis of quantitative differences in the distribution of NP prominence properties (e.g., givenness and animacy) and formal, morphosyntactic cues to grammatical functions (e.g., case marking and verb particles) between OVS and SVO sentences, and between OVS sentences and passives. The results indicate that direct object fronting is used when the object either is topical and highly discourse prominent, or when it is contrastive. I also argue that direct object fronting is used to introduce new topics into the discourse. Subjects are more frequently high in discourse prominence in object-initial sentences than in subject-initial sentences. I suggest that this stems from a motivation to keep the information in object-initial sentences following the sentence-initial object “informationally light” and predictable. Unambiguous formal markers of grammatical functions are used more frequently in OVS sentences than in SVO sentences, but less frequently in passives than in SVO sentences. OVS sentences also more frequently contain an animate subject and an inanimate object than SVO sentences, and in passives, animate subjects and inanimate objects are even less frequent. Writers therefore seem to prefer the structurally unambiguous passive construction over the potentially ambiguous object-initial construction, when grammatical functions cannot be determined on the basis of other formal markers or an NP argument animacy difference. Further, sentences with two animate arguments more frequently contain formal markers than sentences with at most one animate argument. These findings indicate that writers actively avoid direct object fronting when it potentially results in an ambiguity, and provide evidence for the hypothesis that writers are inclined to actively avoid ambiguities more generally.

  • 50.
    Iatropoulos, Georgios
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Herman, Pawel
    Lansner, Anders
    Karlgren, Jussi
    Larsson, Maria
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    Olofsson, Jonas K.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
    The language of smell: Connecting linguistic and psychophysical properties of odor descriptors2018In: Cognition, ISSN 0010-0277, E-ISSN 1873-7838, Vol. 178, p. 37-49Article in journal (Refereed)
    Abstract [en]

    The olfactory sense is a particularly challenging domain for cognitive science investigations of perception, memory, and language. Although many studies show that odors often are difficult to describe verbally, little is known about the associations between olfactory percepts and the words that describe them. Quantitative models of how odor experiences are described in natural language are therefore needed to understand how odors are perceived and communicated. In this study, we develop a computational method to characterize the olfaction related semantic content of words in a large text corpus of internet sites in English. We introduce two new metrics: olfactory association index (OAI, how strongly a word is associated with olfaction) and olfactory specificity index (OSI, how specific a word is in its description of odors). We validate the OAI and OSI metrics using psychophysical datasets by showing that terms with high OM have high ratings of perceived olfactory association and are used to describe highly familiar odors. In contrast, terms with high OSI have high inter-individual consistency in how they are applied to odors. Finally, we analyze Dravnieks's (1985) dataset of odor ratings in terms of OAI and OSI. This analysis reveals that terms that are used broadly (applied often but with moderate ratings) tend to be olfaction-unrelated and abstract (e.g., heavy or light; low OAI and low OSI) while descriptors that are used selectively (applied seldom but with high ratings) tend to be olfaction-related (e.g., vanilla or licorice; high OM). Thus, OAI and OSI provide behaviorally meaningful information about olfactory language. These statistical tools are useful for future studies of olfactory perception and cognition, and might help integrate research on odor perception, neuroimaging, and corpus-based linguistic models of semantic organization.

123 1 - 50 of 130
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf