Poster Abstracts


Attention-deficit/hyperactivity disorder (ADHD) is highly comorbid with a wide array of psychiatric disorders. Individuals with high levels of psychiatric distress are more likely to overreport psychiatric symptomatology. However, it is not known whether these individuals are also more likely to overreport ADHD symptoms, which would have clear implications for ADHD misdiagnosis. In a sample of 329 consecutive adults diagnosed with ADHD following a comprehensive neuropsychological evaluation, this study investigated self-reported ADHD symptomatology via the Clinical Assessment of Attention Deficit (CAt-A) among individuals with (n=207) and without (n=122) one or more comorbid psychiatric disorders. Compared to patients with ADHD alone, patients with comorbid psychiatric disorders endorsed higher rates of overall ADHD symptomatology (t=-2.69, p=.008) and higher rates of childhood and current inattention and impulsivity (ts=-4.70 to -2.79, ps<0.01). Rates of childhood and current hyperactivity were similar across groups (ps>0.30). Patterns of results were similar when excluding patients with invalid CAt-A reporting. These results support the notion that psychiatric distress may result in ADHD symptom overreporting. However, patients with and without comorbid psychiatric disorders demonstrated similar rates of CAt-A symptom invalidity, X2(1,329)=0.08, p=0.78, indicating that the higher rates of ADHD symptom endorsement among individuals with comorbid psychiatric disorders reflect credible reporting.

First AuthorAllison Shields
Second AuthorZachary Resch
Third AuthorJason Soble