U.S. flag

An official website of the United States government, Department of Justice.

Law enforcement

Economical Crime Control: Perspectives from Both Sides of the Ledger

December 2011

The surge in incarceration since 1980 has been fueled in part by the mistaken belief that the population can be divided neatly into "good guys" and "bad guys." In fact, crime rates are not determined by the number of at-large criminals, any more than farm production is determined by the number of farmers. Crime is a choice, a choice that is influenced by available opportunities as much as by character. This perspective, drawn from economic theory, supports a multi-faceted approach to crime control. Dr.

Don't Jump the Shark: Understanding Deterrence and Legitimacy in the Architecture of Law Enforcement

November 2010

Deterrence theory dominates the American understanding of how to regulate criminal behavior but social psychologists' research shows that people comply for reasons that have nothing to do with fear of punishment; they have to do with values, fair procedures and how people connect with one another. Professor Meares discussed the relevance of social psychologists' emerging theory to legal theory and practice and how deterrence and emerging social psychology theories intertwine.

Changing the Behavior of Drug-Involved Offenders: Supervision That Works

December 2012

A small number of those who commit crimes are heavily involved in drugs commit a large portion of the crime in this country. An evaluation of a "smart supervision" effort in Hawaii that uses swift and certain sanctioning showed that individuals committing crimes who are heavily involved in drug use can indeed change their behavior when the supervision is properly implemented.

Children Exposed to Violence

June 2010

Panelists will discuss the results of the recent Office of Juvenile Justice and ​Delinquency Prevention's National Survey on Children's Exposure to Violence and findings from a seven-year follow-up study, funded by NIJ, on home visitation in New York. The survey's findings included startling figures: More than 60 percent of the children interv​iewed were exposed to violence, crime and abuse within the past year, and more than 1 in 10 were injured in an assault.

The National Broadband (Communications) Plan: Issues for Public Safety

June 2011

The Federal Communications Commission delivered the National Broadband Plan in March 2010. As part of the plan, the FCC proposed a strategy for implementing a national public safety broadband network that would allow public safety responders anywhere in the nation to send and receive critical voice, video and data to save lives, reduce injuries, and prevent acts of crime and terror. How this strategy is implemented will have a significant impact on criminal justice and other public safety agencies nationwide, both with respect to operational capability and to resources.

Just Wrong: The Aftermath of Wrongful Convictions

October 2017

The strength of our criminal justice system depends on its ability to convict the guilty and clear the innocent. But we know that innocent people are sometimes wrongfully convicted and the guilty remain free to victimize others. The consequences of a wrongful conviction are far-reaching for the wrongfully convicted and the survivors and victims of the original crimes. 

The NIJ/IACP Partnership

January 2016

This video, featuring NIJ Director Nancy Rodriguez and Hassan Aden of the International Association of Chiefs of Police (IACP), describes the partnership between NIJ and IACP and how the two organizations are linking what we know about what works in policing to the field.

NIJ’s Law Enforcement Advancing Data and Science (LEADS) Program

March 2016

This video, featuring NIJ Director Nancy Rodriguez, Hassan Aden of the International Association of Chiefs of Police (IACP), and two scholars from the 2014 Law Enforcement Advancing Data and Science (LEADS) program, describes the LEADS program, how NIJ and IACP are building the next generation of law enforcement leadership, and how the program has benefited the scholars.

Sexual Assault: Obtaining DNA From Evidence Collected up to a Week Later

June 2009

Technological advances have made it possible to detect male DNA in evidentiary samples collected several days after a sexual act has taken place. Panelists will present the research that has led to these findings, followed by a discussion of the potential impact of this work from the perspectives of the sexual assault nurse examiner (SANE) and the crime laboratory communities.

Fighting the Opioid Crisis

Convening Police Leaders and Researchers to Learn Promising Practices and to Inform Research Agenda

Director Muhlhausen's prepared remarks at the NIJ-hosted Opioid Research Summit.

NIJ Director David B. Muhlhausen at the podium

NIJ Director Muhlhausen

Good morning and welcome to Washington, DC. It’s a privilege to host you here today at the National Institute of Justice. I’m particularly honored to have the Attorney General and the Principal Deputy Assistant Attorney General with us...

Strengthening Forensic Science at Its Foundations to Improve Public Safety

With National Forensic Science Week beginning on August 9, I can’t think of a better time to highlight the importance of NIJ’s investment in forensic science research and how that...

Director’s Corner: Responding to Sexual Assaults

April is Sexual Assault Awareness month and I want to take this opportunity to reflect upon all the strides we have made to sexual assault response practice as a country, and how the lessons learned, investments, and technological advances have made it possible for the apprehension of more criminals, and for victims of sexual assault to find closure.

While it is important to celebrate victories...

Director’s Corner: Developing the Future of Law Enforcement Leadership

I had a chance recently to meet some remarkable up-and-coming policing leaders and watch them in action at IACP’s annual conference. They are participants in a collaborative effort to mentor sworn, mid-rank officers who have shown a desire to advance...

Director’s Corner: Data at Your Fingertips — the National Law Enforcement Applied Research and Data Platform

There are a number of adjectives used to describe different types of research — applied, basic, evaluation, operational, and others. During my time as the Director of NIJ, I want to make sure we add “useful” to those descriptors.

One project that I am very excited about, and that promises great utility for law enforcement agencies is the National Law Enforcement Applied Research and Data...