Obtaining collateral reports from significant others has become increasingly recognized as an important component of assessments for ADHD in adults. The Conners Adult ADHD Rating Scales (CAARS) include both self-report (CAARS-S) and observer-report (CAARS-O) forms. In contrast to the CAARS-S, fewer data have been published with respect to the factor structure, norms, and psychometric properties of the CAARS-O. Thus, the primary aim of this study was to examine how well the 4-factor structure obtained for the CAARS-S could be replicated with data collected from observers reporting on individuals whom they know well using the CAARS-O. The secondary aims included describing the existing norms for the CAARS-O, testing for age and gender effects within those normative data, and examining convergent validity by correlating self- and observer-report data collected on the same subjects. Analyses were based on archival data sets collected as part of the development and norming of the CAARS. These included a sample comprised of 724 adult collateral informants describing 328 men and 396 women using the CAARS-O as well as a sample of 188 adults who completed the CAARS-S and who were also rated on the CAARS-O by a significant other. Results of the confirmatory factor analysis indicated that the 4-factor model found for the CAARS was replicated in the CAARS-O data, with excellent fit for both men and women. Analyses of the normative data for the CAARS-O yielded significant age and gender effects. With respect to convergent validity, significant moderate to high correlations were found between the CAARS-O and CAARS-S across all four factors. Implications of these findings for the conceptualization, assessment, and future study of adult ADHD are discussed.
Library of Congress Subject Headings
Attention-deficit hyperactivity disorder; Dissertations (PsyD) -- Psychology
Date of Award
Graduate School of Education and Psychology
Doss, Ani, "Observer-ratings of ADHD symptoms in adults: normative data, factor structure and convergent validity" (2009). Theses and Dissertations. 28.