Abstract
The aim of the present paper was to investigate the performance on theory of mind tasks of four different clinical groups: children with deficits in attention, motor control and perception (DAMP), children with autism, children with Asperger syndrome, and non-vocal cerebral-palsied children. The children with DAMP performed on the same level as the comparison group on the first and second order theory of mind task. The children with autism and Asperger syndrome performed somewhat lower than the children with DAMP and the comparison group. However, in respect of the specifcity issue, only 6 out of 14 of the non-vocal participants successfully solved the first order theory of mind task, while 13 out of 14 children in a comparison group did. The children were matched for chronological age and IQ. The findings suggest that deficits in theory of mind are not specific to the autistic continuum, but can be found in other groups with communicative disabilities, implying that linguistic and communicative skills are important precursors in the development of theory of mind. The study also shows that severe dysfunction in attention, motor control, and perception is not associated with any theory of mind difficulties.