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Evaluating the effects of the sex offender treatment program in Japanese prisons

Research Project

Project/Area Number 26380926
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Clinical psychology
Research InstitutionHyogo University of Teacher Education

Principal Investigator

Yuma Yoshikazu  兵庫教育大学, 学校教育研究科, 教授 (70406536)

Co-Investigator(Kenkyū-buntansha) 金澤 雄一郎  国際基督教大学, 教養学部, 教授 (50233854)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords性犯罪受刑者 / 処遇効果 / 生存分析 / 傾向スコア / 受刑者
Outline of Final Research Achievements

This study examined preventive effects of the sex offender treatment program in Japanese prisons (SOTPJ) with 3-5-year follow-up data of 598 male sex offence ex-prisoners. We used parametric survival models, controlling confounding factors with a propensity score method. We found that (1) there were different recidivism processes between molesters and non-molesters, (2) for molesters, SOTPJ did not have any significant effects on recidivism, (3) for non-molesters, SOTPJ had a significant and preventive effect on recidivism until 500 days after release from prisons, and (4) molesters had higher recidivism rates than non-molesters did during the follow-up period regardless of their participation in SOTPJ.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (6 results)

All 2016 2015 2014

All Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Effects of Japanese Sex Offender-Treatment Program: Examining heterogeneity of prisoners2016

    • Author(s)
      Yoshikazu Yuma,Yuichiro Kanazawa, Yusuke Inozume, Yuko Matsushima
    • Organizer
      American Society of Criminology
    • Place of Presentation
      Hilton New Orleans Riverside
    • Year and Date
      2016-11-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 日本の性犯罪者処遇プログラムの効果: 受刑者の異質性の検討2016

    • Author(s)
      遊間 義一, 金澤 雄一郎, 猪爪 祐介, 松嶋 祐子
    • Organizer
      日本犯罪心理学会
    • Place of Presentation
      東洋大学白山校舎
    • Year and Date
      2016-09-02
    • Related Report
      2016 Annual Research Report
  • [Presentation] Evaluating effects of Sex Offender Treatment Program in Japanese prisons (SOTPJ)2015

    • Author(s)
      Yoshikazu Yuma, Yuichiro Kanazawa, Yusuke Inotsume, Yuko Matsushima
    • Organizer
      American Society of Criminology
    • Place of Presentation
      Washington DC
    • Year and Date
      2015-11-18
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 日本の刑務所における性犯罪者更生プログラムの効果検証(2)2015

    • Author(s)
      遊間義一,金澤雄一郎,猪爪祐介,松嶋祐子
    • Organizer
      日本犯罪心理学会
    • Place of Presentation
      東北大学
    • Year and Date
      2015-09-26
    • Related Report
      2015 Research-status Report
  • [Presentation] Evaluating the Effects of the Rehabilitative Program for Sex Offenders in Japanese Prisons2014

    • Author(s)
      Yoshikazu Yma, Yuichiro Kanazawa, Yusuke Inotsume, Yuko Matsushima
    • Organizer
      American Society of Criminology
    • Place of Presentation
      San Francisco
    • Year and Date
      2014-11-20
    • Related Report
      2014 Research-status Report
  • [Presentation] 日本の刑務所における性犯罪者更生プログラムの効果検証2014

    • Author(s)
      遊間義一,金澤雄一郎,猪爪祐介,松嶋祐子
    • Organizer
      日本犯罪心理学
    • Place of Presentation
      早稲田大学
    • Year and Date
      2014-09-06
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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