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Beauty sleep: experimental study on the perceived health and attractiveness of sleep deprived people
Karolinska Institutet, Sweden.
Stockholm University, Faculty of Social Sciences, Stress Research Institute.
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2010 (English)In: BMJ. British Medical Journal, E-ISSN 1756-1833, Vol. 341, c6614Article in journal (Refereed) Published
Abstract [en]

Our findings show that sleep deprived people appear less healthy, less attractive, and more tired compared with when they are well rested. This suggests that humans are sensitive to sleep related facial cues, with potential implications for social and clinical judgments and behaviour. Studies are warranted for understanding how these effects may affect clinical decision making and can add knowledge with direct implications in a medical context.

Place, publisher, year, edition, pages
2010. Vol. 341, c6614
National Category
Medical and Health Sciences Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:su:diva-50929DOI: 10.1136/bmj.c6614ISI: 000285552200004PubMedID: 21156746Local ID: P2832OAI: oai:DiVA.org:su-50929DiVA: diva2:383174
Available from: 2011-01-04 Created: 2011-01-04 Last updated: 2017-12-11Bibliographically approved
In thesis
1. The Face of Sleep Loss
Open this publication in new window or tab >>The Face of Sleep Loss
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Sleep deprivation has been studied for over a century, providing knowledge about the benefits of sleep for many physiological, cognitive, and behavioural functions. However, there have only been anecdotal indications about what a tired or sleep-deprived person looks like, despite the fact that appearance influences not only how other people perceive a person but also how they evaluate them and behave towards them. How someone with sleep loss is perceived and evaluated by others is the focus of this thesis. Facial photographs of 48 participants were taken after normal sleep and after either one night of total sleep deprivation or two nights of partial sleep deprivation. The photographs were then evaluated in four different studies by a total of 288 raters recruited from universities and the general public in Stockholm, Sweden. The faces were rated on attractiveness, health, tiredness, sleepiness, sociability, trustworthiness, employability, and leadership ability. These factors were all adversely affected by sleep loss. Furthermore, looking tired was strongly related to being less attractive, looking less healthy and less trustworthy, and being perceived as a poorer employee and leader. One of the studies assessed facial features commonly associated with looking tired, showing that sleep deprivation results in eyes which appear more swollen and red, with dark circles and hanging eyelids, as well as paler skin with more fine lines and wrinkles. When sleep deprived, people were also perceived as more sad. In conclusion, the four studies show that sleep loss and a tired appearance affect how one is perceived by other people. These perceptions may lead to negative evaluations in interpersonal situations, both personal and professional. This thesis thus demonstrates social benefits of prioritizing sleep, adding to the physiological, cognitive, and behavioural research on sleep loss.

Place, publisher, year, edition, pages
Stockholm: Department of Psychology, Stockholm University, 2015. 69 p.
Keyword
sleep loss, sleep deprivation, face perception, interpersonal perception, attractiveness, tiredness
National Category
Psychology
Research subject
Psychology
Identifiers
urn:nbn:se:su:diva-115876 (URN)978-91-7649-133-1 (ISBN)
Public defence
2015-06-12, David Magnussonsalen (U31), Frescati Hagväg 8, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Manuscript.

Available from: 2015-05-21 Created: 2015-04-07 Last updated: 2015-05-27Bibliographically approved

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