The Construct Validity of the CAPQ and PAI in a Sample of College Students



This study assessed the normative equivalence and construct validity of the Cleveland Adaptive Personality Questionnaire (CAP-Q, Poreh and Levin 2019), a relatively brief multi-scale personality inventory developed to assess personality traits and psychopathological states.  The CAP-Q was administered concurrently with the Personality Assessment Inventory (PAI; Morey, 1991) to a sample of 109 college students. The standard scores for matching scales, computed using non-aged-corrected norms, were equivalent, with the CAP-Q age-corrected norms producing better fitting data. Additional analyses showed adequate convergent validity with highly correlated matching scales. Additionally, the multi-scale profiles were comparable across both non-elevated and elevated profiles. Overall, this study shows that the CAP-Q and PAI have similar psychometric properties, with the former being more consistent with prevailing diagnostic models. Recommendations for future studies of the CAP-Q are discussed, including the development of factorial-based subscales.

Author Biographies

Amir M Poreh, Cleveland State University / Case Western University Medical Center

Professor, Department of Psychology, Cleveland State University

Clinical Associate Professor of Psychiatry, Case Western Reserve University School of Medicine

Tiffany Grezmak, Cleveland State University

MA Clinical Psychology

Jennifer Bq Levin, Case Western Reserve University School of Medicine

Department of Psychiatry, Full Professor