Chan Heng Choon Oliver, Beauregard Eric, Myers Wade C
Department of Applied Social Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, S.A.R.
Crim Behav Ment Health. 2015 Feb;25(1):66-78. doi: 10.1002/cbm.1925. Epub 2014 Aug 11.
Information on psychopathological characteristics of sexual homicide offenders is scarce.
To investigate criminal, paraphilic and personality trait differences between serial and single-victim sexual homicide offenders.
All 73 single-victim and 13 serial sexual homicide offenders presenting within a cohort of 671 men sentenced for sexual crimes between 1994 and 2005 and serving their sentence in one high-security Canadian prison and who consented to interview were assessed and compared on their offending patterns, personality pathology and paraphilic behaviours.
Serial sexual homicide offenders were more likely than the single offenders to report deviant sexual fantasies, having selected victims with distinctive characteristics, to have targeted strangers, structured premeditation and/or verbal humiliation of their victims during the offences. Personality pathology, defined by at least two Diagnostic and Statistical Manual of Mental Disorders IV criteria for personality disorder, was common in both groups, but the serial offenders were more likely to have narcissistic, schizoid and/or obsessive-compulsive traits; they were also more likely to engage in sexual masochism, partialism, homosexual paedophilia, exhibitionism and/or voyeurism.
Samples of serial sexual homicide offenders will, fortunately, always be small, and it may be that more could be learned to assist in preventing such crimes if data from several studies or centres were pooled. Our findings suggest that an investigation of sexual homicide offenders should include strategies for evaluating premeditation as well as personality and paraphilic characteristics. Crime scene features that should alert investigators should include similar characteristics between victims and particular aspects of body exposure or organisation.
关于性杀人罪犯心理病理特征的信息匮乏。
调查系列性杀人罪犯与单次性杀人罪犯在犯罪、性偏好及人格特质方面的差异。
在1994年至2005年间因性犯罪被判刑并在加拿大一所高度设防监狱服刑的671名男性罪犯群体中，有73名单次性杀人罪犯和13名系列性杀人罪犯同意接受访谈。对他们的犯罪模式、人格病理及性偏好行为进行评估和比较。
系列性杀人罪犯比单次性杀人罪犯更有可能报告异常性幻想，选择具有独特特征的受害者，以陌生人为目标，犯罪过程中有精心策划的预谋和/或对受害者进行言语羞辱。两组中符合至少两项《精神障碍诊断与统计手册》第四版人格障碍标准定义的人格病理情况都很常见，但系列性杀人罪犯更有可能具有自恋、分裂样和/或强迫性特质；他们也更有可能出现性受虐癖、恋物癖、同性恋恋童癖、露阴癖和/或窥阴癖。
幸运的是，系列性杀人罪犯的样本数量一直很少，如果将多项研究或多个中心的数据汇总，可能会学到更多有助于预防此类犯罪的知识。我们的研究结果表明，对性杀人罪犯的调查应包括评估预谋以及人格和性偏好特征的策略。应提醒调查人员的犯罪现场特征应包括受害者之间的相似特征以及身体暴露或组织的特定方面。
