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A Meta-Analysis of Odor Thresholds and Odor Identification in Autism Spectrum Disorders
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Perception och psykofysik.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Perception och psykofysik.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Perception och psykofysik.ORCID-id: 0000-0003-4531-4313
Antal upphovsmän: 32017 (Engelska)Ingår i: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 8, artikel-id 679Artikel, forskningsöversikt (Refereegranskat) Published
Abstract [en]

Autism Spectrum Disorders (ASD) are often accompanied by atypical visual, auditory, and tactile sensory behavior. Evidence also suggests alterations of the olfactory system, but the pattern of findings appears mixed. To quantify this pattern systematically, we conducted a meta-analysis. Studies were included if they examined olfactory function (i.e., odor threshold, or odor identification) in ASD compared with healthy age-matched control groups. We also coded for the potential moderators gender, age, and IQ. Articles were identified through computerized literature search using Web of Science, PubMed, and Scopus databases. A total of 11 articles compared odor threshold and/or odor identification between cases and controls (for threshold, n = 143 ASD and 148 controls; and for identification, n = 132 ASD and 139 controls). Effects sizes showed a substantial heterogeneity. As a result, the 95% prediction intervals were wide and ranged between a large negative and a large positive effect size for odor threshold, [-1.86, 2.05], and for odor identification, [-1.51, 2.52]. Exploratory analyses suggested that age and IQ may be potential moderators. To conclude, the large heterogeneity is consistent with the notion of both hyposensitivity and hypersensitivity in individuals with ASD. However, future research needs to predict and test the specific direction of the effect to provide convincing evidence for atypical olfactory functions in ASD.

Ort, förlag, år, upplaga, sidor
2017. Vol. 8, artikel-id 679
Nyckelord [en]
autism, olfactory sense, meta-analysis, odor threshold, odor identification
Nationell ämneskategori
Psykologi
Forskningsämne
psykologi
Identifikatorer
URN: urn:nbn:se:su:diva-144840DOI: 10.3389/fpsyg.2017.00679ISI: 000401310400001PubMedID: 28553238OAI: oai:DiVA.org:su-144840DiVA, id: diva2:1120139
Tillgänglig från: 2017-07-05 Skapad: 2017-07-05 Senast uppdaterad: 2020-02-20Bibliografiskt granskad

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Larsson, MariaTirado, CarlosWiens, Stefan
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Perception och psykofysik
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