TRAIT, SOURCE, AND ERROR VARIANCE IN THE ADHD SYMPTOMS AMONG CHILDREN WITH THE ADHD DIAGNOSIS: A MULTITRAIT-MULTISOURCE ANALYSIS
 
Gomez, R. and Tallent, R., University of Ballarat, Australia
 
Our earlier population-based study involving primary school children from Australia and Brazil showed that most of the ADHD symptoms contain more source than trait variance, thus providing weak evidence for the construct validity of the symptoms (Gomez, Burns, Walsh, & Moura, abstract submitted for this Conference). The current study extends this area of research to children with a diagnosis of ADHD. Confirmatory factor analysis (CFA) was used to model a multitrait-multisource design to evaluate the amount of trait, source, and error variance in each ADHD symptom. The two trait factors were the ADHD-inattention (IN) and hyperactivity/impulsivity (H/I) dimensions. The two source factors were parents and teachers. Parents and teachers rated 200 children with the ADHD diagnosis. abstract submitted for this Conference). The current study extends this area of research to children with a diagnosis of ADHD. Confirmatory factor analysis (CFA) was used to model a multitrait-multisource design to evaluate the amount of trait, source, and error variance in each ADHD symptom. The two trait factors were the ADHD-inattention (IN) and hyperactivity/impulsivity (H/I) dimensions. The two source factors were parents and teachers. Parents and teachers rated 200 children with the ADHD diagnosis. ing of the relation of ADHD to other constructs, and research in ADHD.