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- Title
Key research developments on the clinical diagnosis of ADHD.
- Authors
Tannock, Rosemary
- Abstract
Introduction and objective(s): To discuss the factor structure of the DSM-IV symptoms of ADHD and the need to obtain information from multiple informants. Methods: The factor structures of DSM-IV symptoms of ADHD were assessed in independent clinical samples: 189 adolescents and their parents and 751 adults with ADHD, who were assessed with clinician interviews. Four possible factor structures for the 18 ADHD symptoms were tested using confirmatory factor analysis: two models with correlated factors and two bifactor models. Results: Bifactor models with one general and two (inattention and hyperactivity/impulsivity) two specific factors best accounted for adolescent symptoms, according to both parent and adolescents’ reports. Replication of these findings from behavioral rating scales completed for this sample by parents and teachers indicates that the findings are not method- or informant-specific or three (inattention and separate motoric and verbal symptoms of hyperactivity/impulsivity) specific factors best accounted for the symptoms in both samples. Bifactor models with one general and two (inattention and hyperactivity/impulsivity) or three (inattention and separate motoric and verbal symptoms of hyperactivity/impulsivity) specific factors best accounted for the adults’ symptoms. Conclusion: These results suggest that there is a unitary component to ADHD symptoms as well as separable dimensional specific factors.
- Publication
European Child & Adolescent Psychiatry, 2010, Vol 19, pS10
- ISSN
1018-8827
- Publication type
Article
- DOI
10.1007/s00787-010-0117-5