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Does Field Reliability for Static-99 Scores Decrease as Scores Increase?

delete2014-12-01
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A
Amanda Kay Rice
M
Marcus T. Boccaccini *
P
Paige B. Harris
S
Samuel W. Hawes
DOI:10.1037/pas0000009delete
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Abstract

Abstract

En 中文
This study examined the field reliability of Static-99 (Hanson & Thornton, 2000) scores among 21,983 sex offenders and focused on whether rater agreement decreased as scores increased. As expected, agreement was lowest for high-scoring offenders. Initial and most recent Static-99 scores were identical for only about 40% of offenders who had been assigned a score of 6 during their initial evaluations, but for more than 60% of offenders who had been assigned a score of 2 or lower. In addition, the size of the difference between scores increased as scores increased, with pairs of scores differing by 2 or more points for about 30% of offenders scoring in the high-risk range. Because evaluators and systems use high Static-99 scores to identify sexual offenders who may require intensive supervision or even postrelease civil commitment, it is important to recognize that there may be more measurement error for high scores than low scores and to consider adopting procedures for minimizing or accounting for measurement error.
Keywords:
Static-99
risk assessment
sex offender
field reliability
rater agreement
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Psychological Assessment cover
Psychological Assessment
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