Lalonde and Chandler (1995) examined the relationship between social behaviour as determined by teacher ratings on a questionnaire and performance on theory of mind tasks related to the understanding of false belief. Their subjects were normal pre-schoolers. The study reported here used the methodology of Lalonde and Chandler (1995) to investigate the relationship between social behaviour and understanding of false belief in six school-aged boys with Asperger's Syndrome. No clear outcome on the relationship was obtained although greater understanding was seen to relate to age.