Date of Award

1997

Degree Type

Thesis

Degree Name

Bachelor of Arts Honours

Faculty

Faculty of Health and Human Sciences

First Advisor

Steve Baldwin

Abstract

Current methods for screening violent offenders for program eligibility are expensive and time consuming. Developers of the Violent Offender Treatment Program (VOTP) have designed 2 brief and economical instrument to screen offenders for program eligibility. The present study was undertaken to assess the reliability and predictive accuracy of the VOTP Risk Assessment Scale (RAS). An inter-rater reliability of 20 court histories attained a mean kappa of .8 I. The RAS was applied to court histories of 202 violent offenders released between 1985 and 1987. A I 0-year follow-up of convictions for violent behaviour yielded a 47~ base rate. Receiver Operating Characteristic (ROC) curves showed that for varying time-at-risk periods the predictive accuracy remained between .72 and .76. The recommended cutoff score for all time-at-risk periods was I I. The relatively high accuracy rate of the VOTP RAS indicated that it was accurate enough to aid program eligibility decisions.

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