Susceptibility to Ebbinghaus and Muller-Lyer illusions in autistic children: a comparison of three different methods.

ABSTRACT:

Background

Studies reporting altered susceptibility to visual illusions in autistic individuals compared to that typically developing individuals have been taken to reflect differences in perception (e.g. reduced global processing), but could instead reflect differences in higher-level decision-making strategies.

Methods

We measured susceptibility to two contextual illusions (Ebbinghaus, Müller-Lyer) in autistic children aged 6-14 years and typically developing children matched in age and non-verbal ability using three methods. In experiment 1, we used a new two-alternative-forced-choice method with a roving pedestal designed to minimise cognitive biases. Here, children judged which of two comparison stimuli was most similar in size to a reference stimulus. In experiments 2

SUBMITTER: Manning C 

PROVIDER: S-EPMC5364638 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature