Purpose

This paper aims to explore the presence of overkill in sexual homicide. More specifically, the study examines whether overkill is a valid indicator of an organized or disorganized sexual homicide. Moreover, the study tests the presence of various patterns of sexual homicide involving overkill.

Design/methodology/approach

The sample used in this study consists of 662 cases of extrafamilial SHs with (n = 145) and without (n = 517) evidence of overkill, respectively. A binomial regression was used to compare at the multivariate level the two groups of crimes, while a latent class analysis was used to determine whether overkill could be associated with different patterns of sexual homicide.

Findings

Findings from bivariate and logistic regression analyses show that the presence of overkill may be associated with both organized and disorganized sexual homicides. Moreover, latent class analysis suggests that there are three distinct patterns of overkill in sexual homicide: impulsive, sadistic and personal.

Originality/value

This study is the first to empirically analyze overkill in sexual homicides and to propose a classification using crime-commission process characteristics.

中文翻译：

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性凶杀中的过分杀伤模式

目的

本文旨在探讨性杀人中是否存在过大杀伤力。更具体地说，该研究检查了过度杀戮是否是有组织的或无组织的性杀人罪的有效指标。此外，该研究测试了存在多种形式的性杀人罪，包括过分杀人。

设计/方法/方法

本研究使用的样本分别包括662例家庭外SH，分别具有（n = 145）和没有（n = 517）过度杀伤的证据。二项式回归用于在多变量水平上比较两组犯罪，而潜在类别分析用于确定过度杀伤是否可能与不同类型的性杀人罪相关。

发现

从双变量和逻辑回归分析中发现，过度杀伤的存在可能与有组织的和无组织的性杀人案件有关。此外，潜在的阶级分析表明，性杀人过分存在三种截然不同的杀人模式：冲动性，虐待性和个人性。

创意/价值

这项研究是第一个根据经验分析性杀人杀人过多并提出利用犯罪过程特征进行分类的研究。