William Ellison

William Ellison is an Assistant Professor of Psychology at Trinity University, where he teaches Psychopathology, Personality and Individual Differences, and Statistics and Research Methods. Originally from Greenville, South Carolina, Ellison earned his bachelor's degree in History from Princeton University before pursuing graduate studies in clinical psychology at Pennsylvania State University. He received additional clinical training at the Massachusetts Mental Health Center/Harvard Medical School and at Rhode Island Hospital/Alpert Medical School of Brown University.

Ellison's research focuses on personality disorders, particularly Borderline Personality Disorder (BPD), examining the mechanisms, diagnosis, and treatment of personality pathology. He develops person-specific models of psychopathology using ecological momentary assessment techniques and employs meta-analytic methods to research psychotherapy processes. His scholarly work spans diverse areas including the dynamics of borderline personality and anxiety features, self-concept clarity, narcissism, and emotion regulation.

His publication record shows consistent output from 2016 through 2023, with recent work examining professionals' attitudes toward personality disorders, psychotherapy efficacy across treatment modalities, and methodological advances in psychological assessment. Ellison's research often investigates the intricate relationships between psychological constructs and their implications for clinical practice, with particular attention to how personality pathology manifests in daily life through real-time assessment methods.

Ellison maintains an active research program with numerous projects examining the clinical significance of individual features of borderline personality disorder, the epidemiology of personality disorders, and educational approaches to improving quantitative abilities in clinical psychology students. His work demonstrates a commitment to advancing both clinical practice and psychological science through rigorous methodology and innovative assessment approaches.