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  • Title: WISC-IV profiles are associated with differences in symptomatology and outcome in children with ADHD.
    Author: Thaler NS, Bello DT, Etcoff LM.
    Journal: J Atten Disord; 2013 May; 17(4):291-301. PubMed ID: 22286109.
    Abstract:
    OBJECTIVE: The current study investigated the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) cluster profiles of children with ADHD to examine the association between IQ profiles and diagnostic frequency, symptomatology, and outcome in this population. METHOD: Hierarchical cluster analysis was conducted on 189 children with a diagnosis of ADHD-inattentive (ADHD-I) and ADHD-combined (ADHD-C) subtypes. Clusters were then compared across symptom rating scale factor scores, behavioral rating scales, and achievement scores. RESULTS: A five-cluster solution was extracted. One cluster was identified to have reduced processing speed relative to other WISC-IV indexes and significantly higher ratings of inattention and incidence of ADHD-I diagnosis. A second cluster had impairments in processing speed and working memory and was associated with impaired behavioral functioning. CONCLUSION: Findings support a relationship between reduced processing speed and inattention and provide evidence that WISC-IV profiles may be helpful in predicting symptomatology and outcome in children with ADHD.
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