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Bolt, Daniel M.; Hare, Robert D.; Neumann, Craig S. – Assessment, 2007
David Cooke and colleagues have published a series of item response theory (IRT) studies investigating the equivalence of the Psychopathy Checklist-Revised (PCL-R) for European versus North American (NA) male criminal offenders. They have consistently concluded that PCL-R scores are not equivalent, with European offenders receiving scores up to…
Descriptors: Foreign Countries, North Americans, Criminals, Check Lists