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Study on Psychological Characteristics of Sex Offenders Based on MMPI-2 Subtypes upon Pre-trial Evaluation

Abstract

Studies of the diverseon subtypes of sex offenders should make it possible to develop effective forensic treatment and prevention approaches, since individual characteristics will be discovered. This study examined psychological and criminal characteristics, recidivism risk, and demographic features of sex offenders, who were classified based on cluster analyses of their MMPI-2 pre-trial evaluations. There were 3 subgroups. Type 1 (the “complaining group”) showed spikes on scales F, 6(Pa), 8(Sc), and 7(Pt). They had high-range profiles. They were “faking bad”, and got secondary gains. This group had previous sex offenses, mostly rape against people above 13. Type 2 (the “withdrawn group”) showed no spikes on most scales but did show small spikes 2(D), 4(Pd), and 7(Pt). They experienced depression, anxiety, impulsivity, and inferiority. This group had no previous offenses but had a high rate of sexual molestation toward children. Type 3 (the “antisocial group”) showed spikes on scales F, 4(Pd), 5(Mf), 6(Pa), and 0(Si), with antisocial behavior and relationship difficulties. They had the highest rate of previous nonviolent offenses and a relatively high rate of sexual offenses and rapes of people over 13. The results of this study indicate the need to consider sex offender's various psychological characteristics when treating them. For the withdrawn group, we propose using consistent and proper reinforcers in cognitive behavior treatment (CBT), challenging their distorted cognitive belief system, and focusing on relationship skill traing. They should be aided toward enhanced self-esteem, reduced depression and anxiety, and greater impulse control. For the antisocial group, we propose challenging their denial and cognitive distortions in CBT. They should be aided toward enhanced victim empathy, acceptance of their criminal responsibility, anger management, and reduced impulsiveness and aggression.

keywords
sex offender(s), recidivism, MMPI-2, cognitive behavior treatment(CBT), sex offender(s), recidivism, MMPI-2, cognitive behavior treatment(CBT), 성범죄, 재범방지, MMPI-2, 하위유형, 인지행동치료

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