Date of Graduation

Summer 2027

Document Type

Dissertation

Degree Name

Doctor of Clinical Psychology (PsyD)

Department

Psychology

Committee Chairperson

Michael Gawrysiak, PhD

Committee Member

Mike Roche, PhD

Committee Member

Sandra L. Kerr, PhD

Abstract

Opioid use disorder is associated with serious psychological, social, and public health consequences. Co-occurring mental health difficulties further complicate recovery, underscoring the need for interventions that address psychological well-being alongside substance use. This study examined the impact of Mindfulness-Based Relapse Prevention adapted for rolling admission (MBRP-RA) on trait mindfulness, global mental health, and abstinence self-efficacy among adults in residential treatment for opioid use disorder. Participants were randomly assigned to adjunctive MBRP-RA plus treatment as usual (MBRP+TAU) or treatment as usual (TAU) only. Two-way mixed analyses of variance indicated significant treatment condition × time point interactions for trait mindfulness and global mental health. Both treatment conditions improved significantly on these outcomes, with larger gains observed in MBRP+TAU. Interpretation of the global mental health finding was complicated by significantly lower baseline scores in MBRP+TAU. Nonparametric analyses indicated that changes in abstinence self-efficacy did not differ significantly between treatment conditions. Findings provide preliminary support for adjunctive benefits of MBRP-RA for trait mindfulness and global mental health in residential opioid use disorder treatment. Improvements in both treatment conditions may also reflect the therapeutic benefits of residential treatment and limit the ability to detect additional effects of MBRP-RA. Baseline differences, attrition, reliance on self-report, and ceiling effects further warrant cautious interpretation.

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