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Eyetracking of Social Preference Choices Reveals Normal but Faster Processing in Autism

Gharib, Alma and Mier, Daniela and Adolphs, Ralph and Shimojo, Shinsuke (2015) Eyetracking of Social Preference Choices Reveals Normal but Faster Processing in Autism. Neuropsychologia, 72 . pp. 70-79. ISSN 0028-3932. PMCID PMC4574631.

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People with autism spectrum disorder (ASD) have been reported to show atypical attention and evaluative processing, in particular for social stimuli such as faces. The usual measure in these studies is an explicit, subjective judgment, which is the culmination of complex-temporally extended processes that are not typically dissected in detail. Here we addressed a neglected aspect of social decision-making in order to gain further insight into the underlying mechanisms: the temporal evolution of the choice. We investigated this issue by quantifying the alternating patterns of gaze onto faces, as well as nonsocial stimuli, while subjects had to decide which of the two stimuli they preferred. Surprisingly, the temporal profile of fixations relating to choice (the so-called “gaze cascade”) was entirely normal in ASD, as were the eventual preference choices. Despite these similarities, we found two key abnormalities: People with ASD made choices more rapidly than did control subjects across the board, and their reaction times for social preference judgments were insensitive to choice difficulty. We suggest that ASD features an altered decision-making process when basing choice on social preferences. One hypothesis motivated by these data is that a choice criterion is reached in ASD regardless of the discriminability of the options.

Item Type:Article
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URLURL TypeDescription CentralArticle
Adolphs, Ralph0000-0002-8053-9692
Additional Information:© 2015 Elsevier B.V. Received date: 27 August 2014; Revised date: 5 April 2015; Accepted date: 24 April 2015; Available online 25 April 2015. The authors wish to thank Daw-An Wu for his guidance on many aspects of this project. Funding: This study was supported by JST (Japan Science & Technology agency) CREST and Tamagawa GCOE.
Funding AgencyGrant Number
Japan Science and Technology Agency (JST)UNSPECIFIED
Tamagawa UniversityUNSPECIFIED
Subject Keywords:Autism; Social; Eye-tracking; Gaze bias; Reaction Time; Decision-making
PubMed Central ID:PMC4574631
Record Number:CaltechAUTHORS:20150430-131346432
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Official Citation:Alma Gharib, Daniela Mier, Ralph Adolphs, Shinsuke Shimojo, Eyetracking of social preference choices reveals normal but faster processing in autism, Neuropsychologia, Volume 72, June 2015, Pages 70-79, ISSN 0028-3932, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57116
Deposited By: Tony Diaz
Deposited On:30 Apr 2015 20:22
Last Modified:06 May 2020 22:02

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