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The current study addressed the relationship between child sexual abuse (CSA) and perpetration of physical intimate partner violence, examining the possible mediating effect of antisocial traits and behaviors, as well as the differences in these relationships between men and women. Data came from the International Dating Violence Study. Hypotheses were tested on a sample of 13,659 university students from 68 sites and 32 countries using hierarchical linear modeling. Results indicated that CSA was significantly associated with perpetration of physical intimate partner violence for both men and women. The slope of the relationships, however, varied across sites for women. Antisocial traits and behaviors fully mediated the relationship between CSA and perpetration of physical intimate partner violence for women but only partially mediated this relationship for men. Increased focus needs to be paid to gender differences on the effect of CSA on the development of antisocial traits and behaviors, the relationship between these factors and perpetration of intimate partner violence, and the variation of these relationships across nations.

Objectives Examine how the amount and makeup of police-initiated activities changed after the introduction of body-worn cameras (BWCs). Methods From May 21 to November 22, 2016, patrol officers and sergeants from the Milwaukee Police Department were involved in a randomized controlled trial. Through a stratified random sampling procedure, half the officers (n = 252) were assigned BWCs, while officers from the control group (n = 252) continued business as usual. The counts of proactive activities, which included a total count of self-initiated events, as well as traffic stops, business checks, subject stops, and park and walks, were examined using random-effects negative binominal panel regression analyses. The models included a unique measure of contamination to assess its impact on officers' proactivity. Results BWCs had no impact on the total amount of officer-initiated activities, traffic stops, or business checks. Officers with BWCs conducted approximately 8% fewer subject stops and 23% more park and walks than those in the control group. In all models, contamination levels were significantly, positively associated with the number of proactive activities that were conducted; however, the size of this effect was very small. Conclusions Results suggest that BWC-wearing officers may be less likely to engage in proactive activities that are highly discretionary and that could potentially lead to confrontations with community members. As departments continue to develop BWC programs or fine-tune their existing BWC policies, more research is needed to understand the degree to which BWCs affect officers' behaviors and interactions with the public.

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Police body-worn cameras (BWCs) can help improve transparency, accountability, and policing behaviors. This study extends prior BWC research by using a panel analysis design with a measure of treatment duration to examine how the effects of BWCs change over time. Using data from the Milwaukee Police Department ( N = 1,009), we propose and test two competing hypotheses: The program maturity hypothesis suggests that BWCs will be more effective at reducing use of force and complaints over time, whereas the program fatigue hypothesis expects BWCs to be less effective the longer officers wear BWCs. We find that BWCs reduced complaints overall and that, over time, each additional month with a camera resulted in 6% fewer complaints. There was no overall relationship between BWCs and use of force, but our treatment duration model suggests that there was an immediate decrease in use of force incidents, followed by a gradual increase in subsequent months.