Graduation Year

2025

Document Type

Dissertation

Degree Type

Dissertation/Thesis

Degree Name

Doctor in Psychology (Psy. D.)

Abstract

Borderline Personality Disorder (BPD) presents a significant challenge in clinical diagnosis and treatment due to its pervasive pattern of instability in interpersonal relationships, self-image, affects, and impulsivity, often manifesting in early adulthood. Despite its prevalence, issues with categorical personality disorder (PD) diagnosis have been highlighted, leading to the introduction of the Alternative Model of Personality Disorders (AMPD) in Section III of the DSM-5. This doctoral project seeks to address the current mapping of AMPD traits for BPD by evaluating the comprehensive assessment of traits relevant to BPD to determine whether these traits accurately measure the construct or if supplemental characteristics should be considered.

The study examined the predictive validity enhancement achieved by integrating additional Computerized Adaptive Test of Personality Disorders (CAT-PD) traits alongside conventional measures of BPD. I systematically manipulated CAT-PD traits to augment existing scales by employing established BPD measures such as the Personality Assessment Inventory borderline scale (PAI BPD), Zanarini (ZAN), and Personality Diagnostic Questionnaire – Version 4 borderline scale (PDQ-4 BPD) alongside a composite score. The study assessed the predictive value of CAT-PD traits through comprehensive zero-order correlation and linear regression analyses, revealing their substantial contribution beyond DSM-5 Section III traits. The findings highlight the interconnectedness and complexity of personality pathology and suggest that integrating CAT-PD traits enhances the accuracy of predictive models, informing personalized treatment strategies tailored to address the unique needs of individuals with BPD.

Faculty Mentor

Dustin Wygant, PhD

Department Affiliation

Psychology

Committee Member

Michael McClellan, PhD

Department Affiliation

Psychology

Committee Member

Jerry Palmer, PhD

Department Affiliation

Psychology

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