Face and object processing in autism spectrum disorders.
Face-processing deficits in autism hinge on holistic processing, so train whole-face recognition, not just feature spacing.
01Research in Context
What this study did
Wallace et al. (2008) tested how well adults with autism tell faces apart. They also checked if the same adults could tell objects apart. The team used a quasi-experimental design in a lab setting.
Participants viewed pairs of faces or objects and decided if they were the same or different. The study looked at both holistic processing and second-order configural cues.
What they found
Adults with autism struggled with face discrimination but did fine with objects. Some individuals performed like typical adults, showing heterogeneity in the group.
The deficit appeared tied to holistic processing, not to spacing of facial features.
How this fits with other research
Hartston et al. (2023) extends this finding by showing the problem is perceptual, not a memory issue. They used simultaneous and delayed tasks to isolate where the breakdown occurs.
Sparaci et al. (2015) seems to contradict the holistic deficit claim. Their Thatcher illusion task showed intact holistic processing in autistic adolescents. The difference likely stems from task type: discrimination versus illusion detection, and age groups: adults versus adolescents.
Arkush et al. (2013) conceptually replicates the core pattern. Autistic adolescents had poorer face recognition than controls while house recognition stayed equal.
Why it matters
If you run social skills groups, target holistic face training, not just feature spacing drills. Use whole-face matching games and natural photos instead of isolated parts. For adolescents, check if the Thatcher illusion task predicts real-world face use better than lab discrimination. Always probe both face and object skills to see if the deficit is face-specific or part of a broader visual issue.
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02At a glance
03Original abstract
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.
Autism research : official journal of the International Society for Autism Research, 2008 · doi:10.1002/aur.7