The Matrix

What strategies “work” in reducing crime and disorder in policing? Hundreds of examinations of police activity exist, but there are only less than 150 currently that reach at least a moderate level of methodological rigor. The Evidence-Based Policing Matrix is a research-to-practice translation tool that organizes these studies visually, allowing agencies and researchers to view the field of research, from its generalizations to its particulars. The Matrix has been updated to include all qualifying studies through December, 2014. Look for our next update for all studies through December 2015 in the Spring of 2016.

The Matrix categorizes and visualizes these evaluations according to three common dimensions of crime prevention – the nature of the target, the extent to which the strategy is proactive or reactive, and the specificity or generality of the strategy (see the Matrix Key to learn more). This visualization reveals three-dimensional clusters of effective studies, or “realms of effectiveness.”  These realms provide insights into the nature and commonalities of effective police strategies and can be used by police agencies to guide developing future tactics and strategies, or assessing their tactical portfolio against the evidence. Click on the bottom of each target type to access descriptions of each study. For more information:

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