Face and object processing in autism spectrum disorders. 2008

Simon Wallace, and Michael Coleman, and Anthony Bailey
Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK. simon.wallace@psych.ox.ac.uk

The nature and extent of face-processing impairments in individuals with autism spectrum disorder (ASD) remain contentious. The aim of this research study is to assess the face- and object-processing performance of individuals with ASD compared with typically developing controls. Our hypothesis was that individuals with ASD would be significantly impaired on tests of face processing but show intact object processing. More specifically, we tested two competing hypotheses to explain face-processing deficits: holistic hypothesis; second-order configural hypothesis. Twenty-six able adults with ASD and 26 intelligence quotient-matched typically developing controls completed two computerized tests of face and object discrimination. In task 1, the first picture (faces or cars) in a pair was presented as quickly as 40 msec to test holistic processing. In task 2, the decision was whether pairs of faces or houses had been altered in terms of the features or the distance between the features (the second-order configural properties). Individuals with ASD were impaired on all tests of face processing but showed intact object processing and the pattern of findings favored the holistic hypothesis. The heterogeneous pattern of performance in the clinical group showed that some individuals with ASD perform similarly to typically developing individuals in their face-processing skills, whereas others are more accurate in object processing compared with face processing.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010364 Pattern Recognition, Visual Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs. Recognition, Visual Pattern,Visual Pattern Recognition
D011930 Reaction Time The time from the onset of a stimulus until a response is observed. Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D011939 Mental Recall The process whereby a representation of past experience is elicited. Recall, Mental
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D003657 Decision Making The process of making a selective intellectual judgment when presented with several complex alternatives consisting of several variables, and usually defining a course of action or an idea. Credit Assignment,Assignment, Credit,Assignments, Credit,Credit Assignments
D004193 Discrimination Learning Learning that is manifested in the ability to respond differentially to various stimuli. Discriminative Learning,Discrimination Learnings,Discriminative Learnings,Learning, Discrimination,Learning, Discriminative
D005145 Face The anterior portion of the head that includes the skin, muscles, and structures of the forehead, eyes, nose, mouth, cheeks, and jaw. Faces
D005260 Female Females

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