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Comparing Sex Offender Risk Classification Using the Static-99 and LSI-R Assessment InstrumentsUniversity of Tennessee
University at Buffalo
University of Tennessee Objective: This study compares sex offender risk classification using two popular actuarial risk assessment instrumentsthe Static-99 and the Level of Service InventoryRevised (LSI-R). Despite their extensive use, the two scales assess different types of risk factors and research has yet to compare them. Method: Static-99 and LSI-R risk assessments were compared for 30 adult male sex offenders attending a community-based treatment program. Results: A paired Wilcoxon signed-rank test showed a significant difference (Z = 3.962,p < .001) between the instruments, with 63.3% of the sample classified as higher risk for reoffending by the Static-99 than by the LSI-R. Conclusions: The Static-99 may be a more conservative risk assessment tool. Yet because the LSI-R provides useful information about an offenders current needs not included on the Static-99, treatment providers should use both instruments. This more comprehensive assessment of criminogenic risk and need will better inform supervision and intervention decisions.
Key Words: risk assessment sex offenders Static-99 Level Of Service Inventory-Revised LSI-R
Research on Social Work Practice, Vol. 15, No. 6,
557-563 (2005) This article has been cited by other articles:
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