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The present study examined the association of psychopathy, measured by the Hare Psychopathy Checklist-Revised (PCL-R; Hare, 1991, 2003), to sexual offender treatment completion, change, and recidivism in a Canadian sample of 302 treated sexual offenders followed up in the community 17.6 years post release. Sexual violence risk and treatment change was evaluated via the Violence Risk Scale-Sexual Offense version (Wong, Olver, Nicholaichuk, however, therapeutic change, reflecting risk reduction, was significantly associated with decreased sexual and violent recidivism after controlling for baseline risk and PCL-R score. Results of survival analysis indicated that a subgroup of high-risk psychopathic men who made substantial treatment gains had lower trajectories of sexual and violent recidivism over the follow-up period relative to other high-risk men who demonstrated fewer treatment benefits. The issue of therapeutic pessimism with implications for the treatment and retention of high-psychopathy sexual offenders, per the two-component model, is discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
Sewall et al. (Thu,) studied this question.