Assessing the reliability and validity of the Self-Report Psychopathy Scales in a UK offender population

This study assessed the reliability and validity of the Hare Self-Report Psychopathy Scale (Hare SRP) and the short form of the measure in a UK prison sample, using the Psychopathy Checklist Revised (PCL-R) as a reference measure. The Hare SRP and PCL-R were compared for 107 UK adult male prisoners. The SRP and SRP-SF total scores depicted excellent levels of internal consistency and homogeneity and correlated with each other with significant and large effects sizes. Total scores correlated with PCL-R total scores producing medium effect sizes and were significantly predictive of PCL-R total scores with small effect sizes. Implications for practice are discussed.