| Perceptual adaptation to facial asymmetries. | |
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MedLine Citation:
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PMID: 19451376 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Humans and other animals are highly sensitive to deviations from bilateral symmetry and prefer symmetric mates. Fluctuating asymmetries (FAs) are random deviations from perfect symmetry that can result from developmental instability. Human perceptions of facial asymmetry are driven by FAs and insensitive to directional asymmetries (DAs), which have a consistent direction of bias (e.g., left side always larger) across the population and are unrelated to developmental stability. We hypothesized that perceptual adaptation may filter out DAs and provide a proximate mechanism for this perceptual focus on FAs. We created a small population of faces with DAs by applying a unilateral distortion to the same side of each face. After 5 min of adaptation, (new) faces with these DAs looked less asymmetric and the most symmetric-looking distortion shifted toward the adapting asymmetry level. Parallel changes occurred for attractiveness. We suggest that perceptual adaptation may provide the proximate mechanism for an evolutionarily adaptive focus on FAs. |
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Authors:
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Gillian Rhodes; Kim Louw; Emma Evangelista |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Psychonomic bulletin & review Volume: 16 ISSN: 1069-9384 ISO Abbreviation: Psychon Bull Rev Publication Date: 2009 Jun |
Date Detail:
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Created Date: 2009-05-19 Completed Date: 2009-07-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9502924 Medline TA: Psychon Bull Rev Country: United States |
Other Details:
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Languages: eng Pagination: 503-8 Citation Subset: IM |
Affiliation:
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University of Western Australia, Crawley, Australia. gill@psy.uwa.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Psychological* Adolescent Adult Attention* Beauty Choice Behavior Discrimination Learning Facial Asymmetry / psychology* Female Humans Male Orientation Pattern Recognition, Visual* Perceptual Distortion Young Adult |
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