Perceptual decision-making in autism as assessed by “spot the difference” visual cognition tasks


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Article
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Authors
Baron-Cohen, Simon 
Parsons, Owen 
Owen, Adrian M 
Lawson, Rebecca P 
Abstract

Discriminating between similar figures proves to be a remarkably demanding task due to the limited capacity of our visual cognitive processes. Here we examine how perceptual inference and decision-making are modulated by differences arising from neurodiversity. A large sample of autistic (n=140) and typical (n=147) participants completed two forced choice similarity judgement tasks online. Each task consisted of “match” (identical figures) and “mismatch” (subtle differences between figures) conditions. Signal detection theory analyses indicated a response bias by the autism group during conditions of uncertainty. More specifically, autistic participants were more likely to choose the “mismatch” option, thus leading to more hits on the “mismatch” condition, but also more false alarms on the “match” condition. These results suggest differences in response strategies during perceptual decision-making in autism.

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Journal Title
Scientific Reports
Conference Name
Journal ISSN
2045-2322
Volume Title
Publisher
Nature Publishing Group
Sponsorship
Department of Health (via National Institute for Health Research (NIHR)) (202423)
European Commission and European Federation of Pharmaceutical Industries and Associations (EFPIA) FP7 Innovative Medicines Initiative (IMI) (777394)