Embedded figures detection in autism and typical development: preliminary evidence of a double dissociation in relationships with visual search

Dev Sci. 2005 Jul;8(4):344-51. doi: 10.1111/j.1467-7687.2005.00422.x.

Abstract

Individuals with autism show relatively strong performance on tasks that require them to identify the constituent parts of a visual stimulus. This is assumed to be the result of a bias towards processing the local elements in a display that follows from a weakened ability to integrate information at the global level. The results of the current study showed that, among children with autism, ability to locate a figure embedded in a larger stimulus was only related to performance on visual search trials where the target was identified by a unique perceptual feature. In contrast, control children's embedded figures performance was specifically related to their performance on visual search trials where the target was defined by a conjunction of features. This double dissociation suggests that enhanced performance on perceptual tasks by children with autism is not simply a consequence of a quantitative difference in ability to engage in global processing.

MeSH terms

  • Adolescent
  • Attention
  • Autistic Disorder / pathology*
  • Case-Control Studies
  • Child
  • Child Development
  • Child, Preschool
  • Discrimination Learning
  • Discrimination, Psychological
  • Form Perception
  • Humans
  • Pattern Recognition, Visual
  • Reaction Time
  • Visual Perception*