Date of Submission


Degree Type


Degree Name

Doctor of Psychology (PsyD)



Department Chair

Robert A DiTomasso, PhD, ABPP, Chair, Department of Psychology

First Advisor

Bradley M Rosenfield, PsyD, Chairperson

Second Advisor

Robert A DiTomasso, PhD, ABPP

Third Advisor

J Russell Ramsay, PhD


Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurocognitive condition, which can cause a variety of functional impairments that can result in the development of negative self-perceptions. These maladaptive beliefs often lead to the development of maladaptive thoughts or cognitive distortions. Research suggests that cognitive behavioral therapy (CBT) is an efficacious treatment for adults with ADHD. Yet data on the association between cognitive distortions in adult ADHD is limited, particularly, regarding self-concept. The aim of this study is to evaluate the impact that cognitive distortions, problems with self-concept, gender and age have on symptoms of ADHD in a group of adults (N = 130), who presented to a university-based outpatient clinic, specializing in the assessment and treatment of ADHD. Results suggest that problems with self-concept significantly and positively predicted ADHD symptom severity. Additionally, cognitive distortions significantly, positively predicted problems with self-concept, whereas gender was not significantly predictive, in this regard. However, gender, age, and cognitive distortions were not significantly predictive of ADHD symptoms.