Contextual priors do not modulate action prediction in children with autism: Proceedings of the Royal Society B: Biological Sciences

L. Amoruso, A. Narzisi, M. Pinzino, A. Finisguerra, L. Billeci, S. Calderoni, F. Fabbro, F. Muratori, A. Volzone, C. Urgesi

Research output: Contribution to journalArticlepeer-review

Abstract

Bayesian accounts of autism suggest that this disorder may be rooted in an impaired ability to estimate the probability of future events, possibly owing to reduced priors. Here, we tested this hypothesis within the action domain in children with and without autism using a behavioural paradigm comprising a familiarization and a testing phase. During familiarization, children observed videos depicting a child model performing actions in diverse contexts. Crucially, within this phase, we implicitly biased action-context associations in terms of their probability of co-occurrence. During testing, children observed the same videos but drastically shortened (i.e. reduced amount of kinematics information) and were asked to infer action unfolding. Since during the testing phase movement kinematics became ambiguous, we expected children's responses to be biased to contextual priors, thus compensating for perceptual uncertainty. While this probabilistic effect was present in controls, no such modulation was observed in autistic children, overall suggesting an impairment in using contextual priors when predicting other peoples' actions in uncertain environments. © 2019 The Author(s) Published by the Royal Society. All rights reserved.
Original languageEnglish
JournalProc. R. Soc. B Biol. Sci.
Volume286
Issue number1908
DOIs
Publication statusPublished - 2019

Keywords

  • Action prediction
  • Autism
  • Bayes
  • Context
  • Priors
  • autism
  • Bayesian analysis
  • behavioral response
  • child health
  • disability
  • hypothesis testing
  • numerical model
  • prediction

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