Do Language-Related Cognitive Capacities Help Predict Adjustment in Children with Attention-Deficit/Hyperactivity Disorder?

The goal of this paper was to examine the role that language-related cognitive capacities (LRCC) might play in explaining adjustment of 7 to 12 year-old children (M_age = 9.24; SD_age = 0.91) with and without ADHD. The sample was comprised of 178 children with ADHD and 86 typically-developing children (77.3% male; 81.4% White; 9.5% Black; 1.9% Hispanic; 0.8% Asian; 5.7% multiracial; 0.8% did not report race/ethnicity). Using simultaneous regression, we examined whether LRCC accounted for unique variance in achievement, attention problems, oppositional problems, conduct problems, and internalizing, over and above what standard covariates and ADHD diagnostic status could explain. Finally, we examined LRCC as a mediator of the relation between ADHD diagnostic status and these adjustment measures. Results indicated that LRCC significantly predicted 6 of 7 and partially mediated 5 of 7 measures, suggesting that language-related constructs warrant greater attention in diagnosis and treatment of ADHD.