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The Screening Scale for Pedophilic Interests (SSPI): construct, predictive, and incremental validity.

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The Screening Scale for Pedophilic Interests (SSPI) effectively identifies deviant sexual interests in child sex offenders and predicts sexual recidivism. It can substitute for other measures when assessing risk.

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Area of Science:

  • Forensic Psychology
  • Clinical Psychology
  • Criminology

Background:

  • Assessing sexual interests is crucial for managing sex offenders.
  • Existing measures have limitations in capturing specific deviant sexual interests.
  • The Screening Scale for Pedophilic Interests (SSPI) offers a proxy for phallometric assessment.

Purpose of the Study:

  • To examine the construct, predictive, and incremental validity of the SSPI in adult male child sex offenders.
  • To assess the SSPI's relationship with other risk assessment tools.
  • To determine the SSPI's utility in predicting sexual recidivism.

Main Methods:

  • Study included 410 adult male sex offenders.
  • Data sourced from the Dynamic Supervision Project.
  • Construct, predictive, and incremental validity of the SSPI were analyzed against STABLE-2007, STABLE-2000, Static-99R, and Static-200R.

Main Results:

  • SSPI significantly correlated with deviant sexual interests measures (STABLE-2007, STABLE-2000).
  • SSPI predicted sexual recidivism, including new offenses and supervision breaches.
  • SSPI added predictive accuracy to STABLE-2007 but not Static-99R/Static-200R.

Conclusions:

  • The SSPI is a valid measure of deviant sexual interests in child sex offenders.
  • The SSPI demonstrates predictive utility for sexual recidivism.
  • SSPI can serve as a viable substitute for the STABLE-2007 Deviant Sexual Interests item in specific contexts.