By Barbara Menting, Marre Lammers, Stijn Ruiter*, Wim Bernasco

Crime pattern theory predicts that offenders commit offences in their activity spaces. We also propose that they most likely offend in the more frequently visited parts. Previous studies used offenders' residential areas or other activity space proxy measures but lacked data on other routinely visited places (e.g., work, school, and leisure activities). A major contribution of this study is the use of an online survey in which 78 offenders reported on their own activity spaces and committed offences (n = 140). Results show that offending is much more likely in offenders' activity spaces than elsewhere, and effects increase with visiting frequency. Although residential area is a good predictor, offenders' more extensive self-reported activity spaces predict much better where they commit offences.

The British Journal of Criminology, Volume 60, Issue 2, March 2020, Pages 303–322,

By Sophia Ricono-Kaufhold, Marie Czarnietzki, Rajan Darjee, Nathan Brooks, Aleshia Nanev, Michael R. Davis

The present study examined distinctions between child (n = 30) and adult (n = 212) sexual homicide offenders (SHOs) in Australia and New Zealand, contributing to the limited international research on the subject. Data, primarily sourced from judges' sentencing comments on AustLII and New Zealand Legal Information Institute, revealed significant differences. Child SHOs displayed elevated rates of pedophilia, sexual deviance, and adverse childhood experiences, including sexual abuse. They were more likely to be married, cohabitate, and target familial victims. Their crimes were more often committed during daylight and outdoors, involving tactics such as victim conning, restraints, strangulation, and hiding victim's bodies. No significant group differences emerged regarding offenders' psychopathy or sexual sadism scores. Results were interpreted in line with child SHOs' deviant sexual preferences and the routine activity theory. The study, as the first investigating child sexual homicides in Australia and New Zealand, sets the foundation for an evidence-based approach to policy and practice.

Behavioral Sciences & the Law; 2024 Volume 42, Issue 4Jul 2024

By: Eden Kamar, David Maimon, David Weisburd and Dekel Shabat

Although the typical end goal of an online grooming event is to lure a minor into performing sexual activity (either online or offline), no previous study has examined the relevance of targets’ sexual knowledge on the progression of these events. To address this gap, we deployed two honeypot chatbots which simulated young female users in a sample of twenty-three online chatrooms, over a period of three months. The first chatbot simulated a sexually knowledgeable target while the second chatbot simulated a sexually naïve target. Findings from 319 online grooming events indicate that an online grooming event is more likely to progress in the presence of a sexually knowledgeable target. Moreover, we find that online grooming events with sexually knowledgeable targets lasted longer than online grooming events with sexually naïve targets. Finally, we found that sexually knowledgeable targets were more likely to be solicited for offline encounters than sexually naïve targets.

Justice Quarterly, 41(3), 452–473. 2023 https://doi.org/10.1080/07418825.2023.2241540