Interpersonal Problems of Young Adults With and Without Attention-Deficit/Hyperactivity Disorder.

Interpersonal functioning is a core area of impairment for young adults with Attention-Deficit/Hyperactivity Disorder (ADHD), yet the assessment of their interpersonal problems has not been approached using a comprehensive model of interpersonal behaviors. Interpersonal problems of young adults with ADHD ( = 24) were compared to non-ADHD peers ( = 26) by self- and collateral-report using the Inventory of Interpersonal Problems-Circumplex-Item Response Theory (IIP-C-IRT). Both self- and collateral-reports yielded significantly higher scores across interpersonal problem domains, except for self-reported Hostile-Dominant (HD) interpersonal problems.