[A study of cognitive and behavioral development in pre-school and school children with high functioning pervasive developmental disorder].

It has been reported that school-aged children with high functioning pervasive developmental disorder (HFPDD) have numerous difficulties in their school class. We used three psychological tests to investigate whether there is a relationship between intelligence and cognitive, behavioral development in children with HFPDD. The three tests used were an intelligence test (WIPPSI, WISC-lll), the P-F (Picture Frustration) study, and behavioral assessment by their parents. In the P-F study, 60% of 23 children with HFPDD showed a GCR% (Group Conformity Rating) above or below the standard. There was no relationship between GCR% and IQ. In the behavioral assessment by their parents, over 50% of 40 children with HFPDD showed maladaptive behaviors. The high VIQ group showed more maladaptive behaviors than the low VIQ group. These findings suggest that school-aged children with H-FPDD need educational treatment for social deficits and maladaptive behaviors.