"Meet the New Boss. Same as the Old Boss:" A Commentary on Williams, Wormith, Bonta, and Sitarenios (2017)
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2017 International Association of Forensic Mental Health Services. This commentary on Williams et al. (2017) focuses on an additional and equally important issue not addressed in their critique: inter-rater reliability --particularly reliability in field settings. A growing body of evidence indicates that risk assessment instruments administered in applied (and especially adversarial) contexts may be considerably less stable across examiners than what typically is reported in well-controlled, peer-reviewed journal publications. Because reliability constrains validity, effect sizes from such published research may overestimate predictive validity in real-world contexts. Although validity evidence is important, field reliability remains the boss when considering how well an assessment procedure will perform in applied settings.