Peter Wagner, Executive Director
I need your help. For more than a decade, the Prison Policy Initiative has been at the forefront of the movement to expose how mass incarceration undermines our national welfare. With a lot of hard work and generous support from a small network of individual donors, we've won major civil rights victories in local governments, state legislatures and even the Supreme Court. But our long-term viability depends on people like you investing in our work.

Can you stand up for smart and effective justice policy by joining our small network of donors today? You can make a one-time gift, or even become one of our sustaining monthly donors.

Through the end of 2014, your contribution to our work will stretch twice as far thanks to a match commitment from a small group of other donors like you.

I thank you for your investment in our work towards a more just tomorrow.
—Peter
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Research Clearinghouse:

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 clearinghouse updates.


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Some of the most recently added reports are:

Monday, September 29 2014:

  • Presumption of Guilt: The Global Overuse of Pretrial Detention, [PDF] Open Society Justice Initiative. September, 2014. "The present global cohort of 3.3 million pretrial detainees will collectively spend an estimated 660 million days in detention-a terrible waste of human potential that comes at a considerable cost to states, taxpayers, families, and communities."

Thursday, September 25 2014:

Tuesday, September 23 2014:

  • Socio-emotional Impact of Violent Crime [PDF] Bureau of Justice Statistics. September, 2014. "Overall, 68% of victims of serious violence experienced socio-emotional problems as a result of their victimization."
  • The Effect of Collateral Consequence Laws on State Rates of Returns to Prison, [PDF] University of Maryland, Department of Criminology and Criminal Justice. July, 2014. "Surprisingly, these analyses give some indication that collateral consequences may be related to lower rates of returns to prison for technical violations, however future research is needed to confirm this relationship."

Thursday, September 18 2014:

Tuesday, September 16 2014:

  • Prisoners in 2013 [PDF] Bureau of Justice Statistics. September, 2014. "On December 31, 2013, the United States held an estimated 1,574,700 persons in state and federal prisons, an increase of approximately 4,300 prisoners (0.3%) from 2012."
  • Impact of Disproportionate Incarceration of and Violence Against Black People with Mental Health Conditions In the World's Largest Jail System, [PDF] Dignity and Power Now. August, 2014. "Nationwide, people with mental health conditions constitute 64% of the jail population, according to the Federal Bureau of Prison Statistics."

Monday, September 15 2014:

  • The Prevalence of Adverse Childhood Experiences (ACE) in the Lives of Juvenile Offenders, Office of Juvenile Justice and Delinquency Prevention. 2014. "The top three most prevalent ACE indicators were the same for both males and females: family violence, parental separation or divorce, and household member incarceration."
  • Police Officer Body-Worn Cameras [PDF] Office of Justice Programs. September, 2014. "The evaluations in Mesa and Rialto documented substantial drops in citizen complaints following deployment of the technology. The UK studies documented a similar effect."
  • Parsons v. Ryan, CV 12-00601: Arizona Class Action Prison Conditions Lawsuit Expert Reports, [PDF] ACLU of Arizona. September, 2014. "Every week, on average, a patient who has been neglected or mistreated dies in the Arizona prison system, according to these expert reports."