The COPS Office and Campbell Collaboration Crime and Justice Group Partnership

The COPS Office is pleased to continue our partnership with the Campbell Collaboration Crime and Justice Coordinating Group (CCJG). The CCJG conducts systematic reviews on the best available evidence in the practice of crime and justice, synthesizes rigorous studies, and creates a transparent procedure of the relevant research. This partnership strives to offer abbreviated versions of these reviews, formatted specifically for law enforcement, practitioners, and other stakeholders in the field. Currently, five reviews have been published. To view the current series, please visit

For more information about the CCJG, please refer to


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