• executive function;
  • rule use;
  • theory of mind;
  • autism


Cognitive complexity and control (CCC) theory, which is a theory of executive function and its development, provides a metric for comparing task demands across domains. This metric allowed us to examine the relation between theory of mind (ToM) and one aspect of executive function, rule use, in 22 individuals with autism-spectrum disorders, including 12 severely impaired (VIQ⩽40; mean VMA=4.07 years; mean CA=17.47) and 10 mildly impaired (VIQ>40; mean VMA=6.15 years; mean CA=10.30) individuals. For severely impaired individuals, ToM performance was unrelated to rule use, r=−0.40, p>0.05). However, for mildly impaired individuals, the correlation between ToM and rule use was high, r=0.82, p<0.01). This latter finding challenges the hypothesis of a domain-specific, ToM module, and suggests instead that poor performance on ToM tasks may be attributed to a more general difficulty using higher order rules to integrate 2 incompatible perspectives into a single system of inferences. Copyright © 2002 John Wiley & Sons, Ltd.