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Sadism Among Sexual Homicide Offenders: Validation of the Sexual Sadism Scale

机译：性杀人罪犯之间的虐待狂：验证性虐待狂规模

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摘要

Sexual sadism is assumed to be a crucial factor in sexual homicide. Prevalence estimates vary greatly due to differences in the definition of sexual sadism. A nationwide sample of 350 male perpetrators who had committed a sexual homicide offense against a female 14 years of age or above in England or Wales was assessed based on archival records. Sexual sadism was assessed using the Sexual Sadism Scale (SeSaS). Item response theory (IRT) analyses were conducted focusing on the 2-parameter logistic model. The single-factor structure of the SeSaS Part 1 was tested using confirmatory factor analysis. Estimates of both internal consistency and interrater agreement were satisfactory to substantial. IRT analysis showed that the Part 1 items captured moderate to severe levels of the latent construct (i.e., theta levels 0). Based on the Posterior Probability of Diagnosis index, the prevalence of the disorder was estimated at 37% in the sample. The substantial correlation between the SeSaS Part 1 total score and original clinical diagnoses of sadism confirms the criterion validity of the scale. Exertion of control and infliction of torture were among the more informative items. In sum, the results support the usefulness of the SeSaS instrument for assessing forensically relevant forms of sadism.
机译：被认为是性凶杀症的关键因素。由于性虐待狂的定义的差异，流行估计估计变化很大。基于档案记录，评估了在英国或威尔士的女性14岁或以上的女性犯下的350名男性肇事者的全国范围内。使用性虐待主义规模（SESAS）评估性虐待。项目响应理论（IRT）分析专注于2参数物流模型。使用确认因子分析测试SESAS部分1的单因子结构。内部一致性和Interrater协议的估计令人满意，令人满意。 IRT分析表明，第1部分捕获中度至严重水平的潜在构建体（即，θ，Δ0）。基于诊断指标的后验概率，疾病的患病率在样品中估计为37％。 SESAS第1部分之间的实质相关性总分和悲伤的原始临床诊断证实了规模的标准有效性。控制和造成酷刑的努力是更有信息的项目之一。总而言之，结果支持SESAS仪器的有用性，以评估取得的虐待狂的重要形式。

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