This study tests the hypothesis that psychopathy is more associated with instrumental homicides than mixed and reactive homicides, and explores relationships between Psychopathy Checklist-Revised (PCL-R) facet/item scores and different forms of homicide: instrumental (n = 130), mixed (n = 103), and reactive (n = 219) homicides. Instrumental homicides scored higher on facet 2 (p < .01) but scored lower on facet 4 (p < .1) compared to reactive homicides, whereas no facet scores differed between mixed and reactive homicides. Among the items of facet 2 (affective), remorselessness (item 6), and callousness (item 8) were predictive of instrumental homicide.

本研究检验了精神病比混合和反应性凶杀与工具性凶杀更相关的假设，并探讨了精神病检查表修订 (PCL-R) 方面/项目分数与不同形式的凶杀之间的关系：工具性 ( n  = 130)、混合性( n  = 103) 和反应性 ( n  = 219) 凶杀案。 与反应性凶杀相比，工具性凶杀 在第2 方面的得分较高 ( p < .01)，但在第4 方面的得分较低 ( p < .1)，而混合凶杀和反应凶杀在方面得分没有差异。在第 2 方面（情感）的项目中，无情（第 6 项）和冷酷无情（第 8 项）是工具杀人的预测因素。