Research Clearinghouse:

Beyond producing original research, the Prison Policy Initiative edits several databases to empower activists, journalists, and policymakers to shape effective criminal justice policy. This page contains links to virtually all the empirical criminal justice research available online, organized by category and publication date. If you know what you are looking for, you may also search the database. We also have an email newsletter (at right) for new research clearinghouse updates.

Can't find what you are looking for?

Enter one word from the title, author or topic to search the clearinghouse:

Advanced search options and entire database by the date added.

word cloud of search terms

Some of the most recently added reports are:

Monday, June 27 2016:

  • The Gavel Gap: Who Sits in Judgment on State Courts?, American Constitution Society for Law and Policy. June, 2016. "We find that courts are not representative of the people whom they serve — that is, a gap exists between the bench and the citizens."

Friday, June 24 2016:

  • Raising Cain: The Role of Serious Mental Illness in Family Homicides, Treatment Advocacy Center. June, 2016. "[T]his is the first study of the role of serious mental illness in all family homicides."
  • Police Integrity Lost: A Study of Law Enforcement Officers Arrested, U.S. Department of Justice. April, 2016. "This study is a quantitative content analysis of archived news articles and court records reporting on the arrest(s) of law enforcement officers in the United States from 2005-2011."

Wednesday, June 22 2016:

  • Isolated in Essex: Punishing immigrants through solitary confinement, New Jersey Advocates for Immigrant Detainees, American Friends Service Committee, and New York University School of Law Immigrants Rights Clinic. June, 2016. "This report completes the picture by presenting an analysis of previously unavailable data regarding the use of disciplinary solitary confinement (“disciplinary segregation”) against immigrant detainees in Essex County Correctional Facility[.]"
  • Recidivism of Offenders Placed on Federal Community Supervision in 2005: Patterns from 2005 to 2010, Bureau of Justice Statistics. June, 2016. "Overall, 35% of these offenders were arrested within 3 years and 43% were arrested within 5 years of placement on community supervision."

Monday, June 20 2016:

Thursday, June 16 2016:

  • States of Incarceration: The Global Context 2016, Prison Policy Initiative. 2016. "[P]lacing each state in a global context reveals that incarceration policy in every region of this country is out of step with the rest of the world."

Tuesday, June 14 2016:

  • Marijuana Legalization in Colorado: Early Findings, Colorado Department of Public Safety. March, 2016. "The total number of marijuana arrests decreased by 46% between 2012 and 2014, from 12,894 to 7,004."
Tweet this page Follow @PrisonPolicy on Twitter Get our newsletter Donate Contact Us


  • September 21, 2016:
    Executive Director Peter Wagner will be speaking at Claremont McKenna College in California. Details TBA.

Not near you?
Invite us to your city, college or organization.