The effectiveness of assessment instruments in measuring change in persons with an intellectual disability who have sexually offended
Burrett, V. M. (2010). The effectiveness of assessment instruments in measuring change in persons with an intellectual disability who have sexually offended (Thesis, Master of Social Sciences (MSocSc)). The University of Waikato, Hamilton, New Zealand. Retrieved from http://hdl.handle.net/10289/5268
Permanent Research Commons link: http://hdl.handle.net/10289/5268
The present research was designed to examine a set of assessment measures for their effectiveness in evaluating risk and treatment needs in a small sample of intellectually disabled sex offenders (IDSOs). IDSO assessment and treatment is a developing field in terms of research and practice. Many of the current assessment measures and treatment models used to date have been based on models for the non-ID offender population (Lambrick, 2003). Measures included in the present study were: the Rapid Risk Assessment for Sex Offender Recidivism (RRASOR), STATIC-99, the Sexual Violence Risk - 20 (SVR-20), the Assessment of Sexual Knowledge (ASK), the Questionnaire on Attitudes Consistent with Sex Offending (QACSO), and the Assessment of Risk and Manageability of Intellectually Disabled IndividuaLs who Offend - Sexually (ARMIDILO-S). A within-subject pre-post design was utilised, with participants acting as their own controls. Participants were assessed on all measures in the pre-treatment phase, and on the SVR-20, ASK, QACSO and acute items of the ARMIDILO-S in the post-treatment phase. Treatment involved engagement in a SAFE-ID group (modelled on the SOTSEC-ID treatment program) over a 7 month period. Although the sample was small, some changes in risk-relevant variables were found. Expected changes were found with the SVR-20, ASK and the client and environmental protective factors of the ARMDILO-S. Unexpected changes were found with the QACSO and the client and environmental risk factors of the ARMIDILO-S. Further research is suggested, including the use of a larger sample.
The University of Waikato
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