"Crime prevention means many different things to many different people. Programs and policies designed to prevent crime can include the police making an arrest as part of an operation to deal with gang problems, a court disposal to a secure correctional facility, or, in the extreme case, a death penalty sentence. These measures are more correctly referred to as crime control. More often crime prevention refers to efforts to prevent crime or criminal offending in the first instance -- before the act has been committed. Both forms of crime prevention share a common goal of trying to prevent the occurrence of a future criminal act, but what distinguishes crime prevention from crime control is that prevention typically operates outside of the confines of the formal justice system. […] In this paper we set out to address three main questions as they relate to developmental and situational crime prevention today and in the years to come: 1. What do we know? This pertains largely to the effectiveness of the two strategies. 2. What do we need to know? This concerns gaps in knowledge on effectiveness and related key issues. 3. How can we find out? This final question has to do with research strategies to address the gaps in knowledge and priorities for research."
National Criminal Justice Reference Center: https://www.ncjrs.gov/