Date of Award


Degree Type


Degree Name

Doctor of Psychology (PsyD)

Committee Chair

Genevieve L. Y. Arnaut, Psy.D., Ph.D.

Second Advisor

Robin L. Shallcross, Ph.D., ABPP


Awareness about nonsuicidal self-injury (NSSI) in clinical and nonclinical populations has rapidly expanded in the last 20 years. However, much less is known about this behavior in male inmates. In February and March 2013, 140 male inmates in two Oregon correctional institutions participated in a study on the prevalence, frequency, functions, and predictors of NSSI. Results indicated that 2.1% of participants (n = 3) had engaged in NSSI during current incarceration. The most commonly endorsed NSSI behaviors were cutting and interfering with wound healing, with frequencies ranging from two to 500 instances. Participants emphasized intrapersonal functions of NSSI over interpersonal functions. Study hypotheses could not be tested statistically due to the low number of participants who endorsed NSSI during current incarceration. However, the following factors seemed linked to NSSI behaviors during current incarceration: preincarceration NSSI history, younger than average age, recency of current incarceration, and elevated scores on the PAI ANT scale. Implications of the study and directions for future research are discussed.


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