ERIC Number: EJ831601
Record Type: Journal
Publication Date: 2009-Apr
Abstractor: As Provided
Reference Count: 0
Differentiating among Children with PDD-NOS, ADHD, and Those with a Combined Diagnosis on the Basis of WISC-III Profiles
Scheirs, J. G. M.; Timmers, E. A.
Journal of Autism and Developmental Disorders, v39 n4 p549-556 Apr 2009
Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) and Attention Deficit/Hyperactivity Disorder (ADHD) have partly overlapping symptoms. It can also be debated whether a third diagnostic category exists: children with a combined diagnosis. In this study an attempt was made to distinguish among the three groups on the basis of intelligence (WISC-III) profiles. It was found that the PDD-NOS group had higher verbal and performance IQ's, as well as higher WISC-III index scores than the ADHD group. Subtests Block Design and Mazes discriminated best. It was concluded that based on intelligence scores, only PDD-NOS and ADHD emerged as distinct categories, whereas the combined diagnosis did not. Future research on the distinctiveness of these diagnostic groups, however, should include variables other than IQ.
Descriptors: Intelligence, Pervasive Developmental Disorders, Hyperactivity, Attention Deficit Disorders, Intelligence Quotient, Identification, Profiles, Children, Clinical Diagnosis, Scores, Verbal Ability, Measures (Individuals), Intelligence Tests
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A