Abstract

http://ssrn.com/abstract=1965965
 
 

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Reevaluating Inter-Rater Reliability in Offender Risk Assessment


Leontien Van der Knaap


INTERVICT, Tilburg University

Marise Ph. Born


Erasmus University Rotterdam (EUR) - Faculty of Social Sciences

L. E. W. Leenarts


affiliation not provided to SSRN

P. Oosterveld


affiliation not provided to SSRN

November 29, 2011

Crime & Delinquency, 2010
Tilburg Law School Research Paper No. 005/2012

Abstract:     
Offender risk and needs assessment, one of the pillars of the Risk-Need-Responsivity model of offender rehabilitation, usually depends on raters assessing offender risk and needs. The few available studies of inter-rater reliability in offender risk assessment are, however, limited in the generalizability of their results. The present study examined inter-rater reliability in Dutch offender risk assessment of 38 raters who independently assessed 75 offenders. Results show substantial reliability (Tinsley & Weiss’ T value ≥ .61) for risk of reconviction and moderate (T value ≥ .41) to substantial reliability for offender needs, such as accommodation, finances, or education. These results are discussed in light of a recent British study on the inter-rater reliability of a comparable risk assessment instrument. Results from the present study show similar to better reliability, leading to the conclusion that greater external validity does not negatively influence inter-rater reliability results.

Number of Pages in PDF File: 25

Keywords: offender assessment,risk, Inter-rater reliability, recidivism risk assessment scales (RISc)

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Date posted: November 29, 2011 ; Last revised: January 8, 2012

Suggested Citation

van der Knaap, Leontien and Born, Marise Ph. and Leenarts, L. E. W. and Oosterveld, P., Reevaluating Inter-Rater Reliability in Offender Risk Assessment (November 29, 2011). Crime & Delinquency, 2010; Tilburg Law School Research Paper No. 005/2012. Available at SSRN: http://ssrn.com/abstract=1965965 or http://dx.doi.org/10.2139/ssrn.1965965

Contact Information

Leontien Marjon Van der Knaap (Contact Author)
INTERVICT, Tilburg University ( email )
P.O. Box 90153
Tilburg, Noord Brabant 5000 LE
Netherlands
HOME PAGE: http://www.tilburguniversity.edu/webwijs/show/?uid=l.m.vdrknaap
Marise Ph. Born
Erasmus University Rotterdam (EUR) - Faculty of Social Sciences ( email )
3000 DR Rotterdam
Netherlands
L. E. W. Leenarts
affiliation not provided to SSRN
P. Oosterveld
affiliation not provided to SSRN
No Address Available
Feedback to SSRN


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