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      Susceptibility to Optical Illusions Varies as a Function of the Autism-Spectrum Quotient but not in Ways Predicted by Local-Global Biases.

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          Abstract

          Individuals with autism spectrum disorder and those with autistic tendencies in non-clinical groups are thought to have a perceptual style privileging local details over global integration. We used 13 illusions to investigate this perceptual style in typically developing adults with various levels of autistic traits. Illusory susceptibility was entered into a principal-component analysis. Only one factor, consisting of the Shepard's tabletops and Square-diamond illusions, was found to have reduced susceptibility as a function of autistic traits. Given that only two illusions were affected and that these illusions depend mostly on the processing of within-object relational properties, we conclude there is something distinct about autistic-like perceptual functioning but not in ways predicted by a preference of local over global elements.

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          Author and article information

          Journal
          J Autism Dev Disord
          Journal of autism and developmental disorders
          Springer Nature
          1573-3432
          0162-3257
          June 2016
          : 46
          : 6
          Affiliations
          [1 ] School of Psychology and Public Health, La Trobe University, Bendigo, VIC, Australia. p.chouinard@latrobe.edu.au.
          [2 ] School of Psychology, Cardiff University, Cardiff, Wales, United Kingdom.
          [3 ] School of Psychology and Public Health, La Trobe University, Bendigo, VIC, Australia.
          [4 ] School of Psychology, University of East Anglia, Norwich, England, United Kingdom.
          Article
          10.1007/s10803-016-2753-1
          10.1007/s10803-016-2753-1
          26914611
          0c9a0b4a-78f9-49f4-906c-ae9335ca9dc8
          History

          Autism-spectrum quotient (AQ),Illusory susceptibility,Shepard’s tabletops illusion,Visual illusions,Visual perception

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