Reliability and Predictive Validity of the Juvenile Sex Offender Assessment Protocol-II in an Australian Context

This study investigated the reliability and predictive validity of the Juvenile Sex Offender Assessment Protocol-II (J-SOAP-II), in an Australian context, and for Australian Indigenous and non-Indigenous youth. Participants were 123 (n = 91 non-Indigenous; n = 32 Indigenous) youth assessed using the...

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Bibliographic Details
Main Author: Molnar, Timea (Author)
Contributors: Allard, Troy ; McKillop, Nadine ; Rynne, John
Format: Electronic Article
Language:English
Published: 2022
In: International journal of offender therapy and comparative criminology
Year: 2022, Volume: 66, Issue: 10/11, Pages: 1051-1070
Online Access: Volltext (lizenzpflichtig)
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Keywords:
Indigenous
J-SOAP-II
Predictive Validity
Recidivism
Reliability
Sexual
Youth
Description
Summary:This study investigated the reliability and predictive validity of the Juvenile Sex Offender Assessment Protocol-II (J-SOAP-II), in an Australian context, and for Australian Indigenous and non-Indigenous youth. Participants were 123 (n = 91 non-Indigenous; n = 32 Indigenous) youth assessed using the J-SOAP-II and followed up over an average period of 4 years. The reliability of the J-SOAP-II was assessed using measures of internal consistency (Cronbach’s alphas and inter-item correlations). Receiver operating characteristic (ROC) analyses were conducted to assess the J-SOAP-II’s validity in predicting sexual and non-sexual (violent and non-violent) recidivism. Overall, the J-SOAP-II demonstrated moderate to high levels of reliability and weak to moderate levels of validity for predicting sexual and non-sexual (violent and non-violent) recidivism for the whole sample. While the J-SOAP-II total score was significantly associated with non-sexual (violent and non-violent) recidivism for non-Indigenous youth, it was not significantly associated with any of the outcome variables for Indigenous youth. Across all analyses, the dynamic scales of the J-SOAP-II predicted recidivism with greater accuracy than the static scales. However, the static scales had greater accuracy in predicting the risk of sexual recidivism for Indigenous youth. While a reliable measure, these preliminary findings raise questions about the validity of the J-SOAP-II for predicting sexual recidivism for Indigenous and non-Indigenous youth in an Australian context, and warrant further investigation.
ISSN:1552-6933
DOI:10.1177/0306624X19900978