The eyes or the mouth? Feature salience and unfamiliar face processing in Williams syndrome and autism

Riby, Deborah, Doherty-Sneddon, Gwyneth and Bruce, Vicki (2009) The eyes or the mouth? Feature salience and unfamiliar face processing in Williams syndrome and autism. Quarterly Journal of Experimental Psychology, 62 (1). pp. 189-203. ISSN 1747-0218

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Using traditional face perception paradigms the current study explores unfamiliar face processing in two neurodevelopmental disorders. Previous research indicates that autism and Williams syndrome (WS) are both associated with atypical face processing strategies. The current research involves these groups in an exploration of feature salience for processing the eye and mouth regions of unfamiliar faces. The tasks specifically probe unfamiliar face matching by using (a) upper or lower face features, (b) the Thatcher illusion, and (c) featural and configural face modifications to the eye and mouth regions. Across tasks, individuals with WS mirror the typical pattern of performance, with greater accuracy for matching faces using the upper than using the lower features, susceptibility to the Thatcher illusion, and greater detection of eye than mouth modifications. Participants with autism show a generalized performance decrement alongside atypicalities, deficits for utilizing the eye region, and configural face cues to match unfamiliar faces. The results are discussed in terms of feature salience, structural encoding, and the phenotypes typically associated with these neurodevelopmental disorders.

Item Type: Article
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > Psychology
Depositing User: EPrint Services
Date Deposited: 18 Mar 2010 13:49
Last Modified: 31 Jul 2021 08:39

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