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The NCJRS Abstracts Database contains abstracts of more than 200,000 criminal justice, juvenile justice, and substance abuse resources housed within the NCJRS Library. Search the NCJRS Abstracts Database for resources on this topic.
 
 
Gangs Programs at a Glance
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Total Number of Programs: 23

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Gangs Practice Outcomes at a Glance
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Total Number of Practices: 1

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Randomized Controlled Trial (RCT) / Randomized Field Experiment

Refers to an experimental research design in which participants are randomly assigned to a treatment or a control group. Most social scientists consider random assignment to lead to the highest level of confidence that observed effects are the result of the program and not other variables.

Crime & Crime Prevention

Gangs

There is no single, universally accepted definition of a “gang.” Many state and local jurisdictions have developed statutory definitions. The following are common criteria for classifying a group as a gang.

  • The group has three or more members, generally aged 12–24.
  • Members share an identity, typically linked to a name, and often other symbols.
  • Members view themselves as a gang, and they are recognized by others as a gang.
  • The group has some permanence and a degree of organization.
  • The group is involved in an elevated level of criminal and/or delinquent activity.

This definition refers to what some call “street gangs” and does not generally include organized crime groups, hate groups, or groups driven exclusively by ideology. 

Programs

Practices

OJP Publications

Modernizing Crime Statistics: Report 2 - New Systems for Measuring Crime, BJS-Sponsored, 2018
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Reducing Gang Violence: A Randomized Trial of Functional Family Therapy, NIJ-Sponsored, 2018
PDF

Project Safe Neighborhoods (PSN): Research Foundation, BJA-Sponsored, November 2018
PDF

Common Components of Successful PSN Strategies, BJA-Sponsored, November 2018
PDF

Tailored Functional Family Therapy Program Shows Promise for Reducing Subsequent Criminal Activity in a Population at High Risk for Joining Gangs, NIJ, November 2018
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More OJP Publications

Questions and Answers

How many homicides in the United States are known to be gang-related?
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Where can I find gang prevention and intervention strategies for law enforcement personnel?
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Is there a newsletter or listserv that focuses specifically on gangs and related issues?
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