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Paraphilia is a condition in which the sexual excitement relies on fantasizing and/or participating in unusual sexual behaviors although the line between "normal" and "abnormal" has been disputed. The project aimed to explore which sexual fantasies and behaviors are common and uncommon in the general population. Furthermore, the relationship between sexual fantasies, sexual behaviors, and problematic pornography consumption was examined. Finally, the impact of gender was assessed. Analyses were conducted on a sample of 139 participants. Correlations were found between fantasies, behaviors, and problematic pornography consumption. Furthermore, gender differences were found for both sexual fantasies and problematic pornography consumption. Finally, multiple regression revealed that age, gender [Men], fantasies, and behaviors were significant predictor of problematic pornography consumption. Those findings are in-line with previous studies which highlighted that the threshold to consider a sexual practice as being abnormal needs to be reconsidered on the basis of self-reported fantasies and behaviors in the general population., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

The study investigated whether different types of sexual homicide perpetrators are more or less skilled at delaying detection. A newly proposed direct/indirect typology was used alongside information about the time of arrest, the frequency of specific precautions as well as the impact of forensic strategies used by the perpetrators to examine skill at delaying detection. The results indicated that the time from the killing to the arrest, as measured in days, was longer for the direct than the indirect sexual killers. Despite the fact that the direct aggressors were better at delaying detection, overall the indirect and the direct offenders did not differ in the frequency of use of most of the precautions. However, different forensic awareness strategies were more efficacious for the direct and the indirect offenders. These results are discussed in relation to the crime scripts for the two perpetrator groups.

As with other sexual offenders, sexual homicide perpetrators can be reluctant to talk about their criminal behavior. Therefore, in homicide cases, forensic practitioners frequently rely on crime scene information to identify any sexual behavior associated with the offense. This study aims to identify objective and readily available crime scene information, alongside information about victims and perpetrators, based on 65 cases from England and Wales in the United Kingdom of men convicted of homicide who had committed a non-serial sexual homicide and 64 cases of men convicted of homicide where the available evidence indicated that it was a non-serial non-sexual homicide. Chi-square tests and logistic regression were used to analyze the data. There were few differences in terms of demographic information and criminal histories between the two perpetrator groups. There were crime scene indicators supporting the use of Ressler et al.'s definition of sexual homicide. The victims of sexual homicide were generally found in their home with the lower half of the body exposed and with evidence of vaginal sex. Furthermore, extreme injuries and strangulation were more frequent in sexual homicides. Use of weapon was associated with a non-sexual homicide. Victims of sexual homicide were as likely to know the perpetrator as not. Potential benefits of the characteristics reported to investigators and forensic practitioners tasked with identifying sexual homicides are discussed and areas for further research suggested.