Confirmatory factor analysis was used to model a multitrait (ADHD-inattention and hyperactivity/impulsivity) by multi-source (teachers and parents) design across a 3-month interval in a sample of 360 Australian elementary school children. The purpose was to evaluate the convergent and discriminant validity of the ADHD-inattention (IN) and hyperactivity/ impulsivity (H/I) measures. Although similar traits and similar sources showed stronger correlations across time than dissimilar traits and dissimilar sources, the amount of source variance in the ADHD-IN and ADHD-H/I measures was substantial and consistent across the interval (M = 59%; range = 35-84%). This large amount of source variance raises the possibility that the correlations of the IN and H/I rating scales with other constructs (e.g., social competence, conduct problems) represent mostly source rather than trait effects. Multitrait by multisource analyses provide a means to answer this question and further advance understanding of ADHD.

Item Type:	Refereed Article
Research Division:	Psychology
Research Group:	Social and personality psychology
Research Field:	Personality and individual differences
Objective Division:	Health
Objective Group:	Public health (excl. specific population health)
Objective Field:	Mental health
UTAS Author:	Gomez, R (Professor Rapson Gomez)
ID Code:	62903
Year Published:	2003
Web of Science® Times Cited:	39
Deposited By:	Psychology
Deposited On:	2010-03-30
Last Modified:	2010-05-05
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