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Date of Award


Degree Type

Dissertation (On-Campus Access Only)

Degree Name

Doctor of Psychology (PsyD)

Committee Chair

Catherine Miller, PhD

Second Advisor

Shane Haydon, PhD

Third Advisor

Paul Michael, PhD


This study replicated and expanded on Stevens' (2004) findings. Stevens' (2004) study examined licensed psychologists' treatment and assessment practices, personal history of Alcohol or Other Drug (AOD) problems, beliefs about clients with AOD problems, professional training, and feelings of competence. The present study also addressed beliefs about and knowledge of 12-step programs. The measure used was a revised version of Stevens (2004) original survey. The anonymous survey was mailed to 600 Oregon licensed psychologists. Of the 145 completed surveys, 49% were men and.' 49% were women, the mean age was 51.4 (SD = 9.7), the average number of years of licensure in Oregon was 14 years (SD = 9.07), and 77.9% of respondents were licensed for over 5 years. Respondents were largely Caucasian (93.8%). Pearson product-moment correlation, Point-biserial correlation, Phi correlation, and chi-square analysis were computed. Two out of eight hypotheses were supported. The longer a psychologist has been in practice the less AOD training he or she will have, 1'(104) = -.348,p < .05. A medium effect size was detected (1'2 = .121). Psychologists who subscribe to a disease model and have low feelings of competence are less likely to treat clients presenting with AOD issues, x2(1, N = 44) = 9.24, p < .05. The Phi value of -.458 reflects a medium effect size. Findings were consistent with Stevens' (2004) research. Findings support the high prevalence rates of these disorders found in previous research, show that psychologists are receiving more training than reflected in past studies, and highlight the frequency with which psychologists have personal or family histories of AOD problems. Findings reflect the importance of continued research into the treatment and assessment practices of psychologists regarding substance use disorders, as well as the importance of increased training during a psychologist's formal training period.