Research Library
Our mission is to empower activists, journalists, and policymakers to shape effective criminal justice policy, so we go beyond our original reports and analyses to curate a database of virtually all the empirical criminal justice
research available online.
Tips: If you know what you are looking for, you may also search the database. We also have an email newsletter (at right)(at bottom) for new research library updates.
- COVID-19 (79) Research on the pandemic’s impact on prisons and jails
- Community impact (103) Research on the impact of the criminal legal system on housing, schools, employment, neighborhoods, and more
- Conditions of confinement (265) Research on prison and jail conditions such as solitary confinement, labor, discipline, food, and more
- Courts and trials (164) Research on prosecutors, judges, public defense, court caseloads, and more
- Crime (282) Curated research on crime, crime rates, and victimization
- Death penalty (153) Information and data on capital punishment and executions
- Disability (30) Research on the prevalence of, and challenges faced by, people with disabilities in the criminal legal system
- Drug policy and treatment (175) Research on punishing and treating drug use in the criminal legal system
- Economics of incarceration (175) Research on the economic drivers and consequences of mass incarceration
- Education (134) Curated research on education programs in prisons and the school-to-prison pipeline
- Families (151) Information and data on the criminal legal system’s impacts on families
- Felony disenfranchisement and voting rights (93) Information about laws barring people from the polls because of criminal convictions
- General (162) Broad-based research and information about the criminal legal system
- Gun control (44) Information and data about gun violence, firearms, and gun control policy
- Health and healthcare (195) Research on access to healthcare, chronic and infectious disease, mortality, and more
- Immigration (70) Research on the incarceration and detainment of immigrants
- Incarceration rates and trends (335) Research documenting the growth of prison and jail populations
- International incarceration (44) Curated research on incarceration trends worldwide, and how they compare to the U.S.
- Jails (282) Research on jail populations, jail conditions, jail construction, and more
- LGBTQ (25) Information and data on the mass criminalization and incarceration of LGBTQ+ people
- Mental health (85) Research on the prevalence and treatment of mental illness in the criminal legal system
- Policing (270) Information and data on arrests, traffic stops, law enforcement interactions, and more
- Poverty and wealth (151) Research on fines, fees, debt, and the criminalization of poor people
- Pretrial detention (121) Research on the costs and outcomes of detaining people before trial
- Prison gerrymandering (20) Research on prison-based gerrymandering (see also www.prisonersofthecensus.org)
- Privatization (102) Information and data on how private companies exploit incarcerated people and their families
- Probation and parole (122) Information about community supervision policies, conditions, violations, and more
- Public opinion (49) Research on public perceptions of crime, prison, reform, and more
- Racial and ethnic disparities (181) Research and statistics on racial and ethnic disparities in the criminal legal system
- Reentry and recidivism (244) Information and research on the challenges and outcomes for people released from incarceration, including collateral consequences
- Sentencing policy (141) Research on the rise and impact of excessive criminal sentences
- Sex-related convictions (17) Research about the unique punishment of sex-related crimes through registries, civil commitment, and other means
- Women and gender (136) Information and data on gender disparities in the criminal legal system
- Youth and juvenile justice (399) Research about youth in the criminal legal system
Can't find what you are looking for?
Enter one word from the title, author or topic to search the library:
Advanced search options or view entire database by the date added.
Some of the most recently added reports are:
Tuesday, January 21 2025:
- Deaths by Suicide An Investigation of the Deaths of Three Individuals in Nebraska Department of Correctional Services Custody,
Office of Inspector General of the Nebraska Correctional System.
August, 2024.
"The OIG death investigations focus on the circumstances of the death ...and events or actions of NDCS leading up to the death, as well as the NDCS response to the death, and to make recommendations for improvement."
- Air Pollution and Criminal Activity: Microgeographic Evidence from Chicago, Paywall :(
Evan Herrnstadt et al.
October, 2021.
"We compare crime upwind and downwind of major highways on days when wind blows orthogonally to the road...we find that air pollution increases violent crime on the downwind sides of interstates."
- Healthcare in Carceral Settings: Alternatives for the Medically Vulnerable Incarcerated Person,
Sydney Manning.
June, 2024.
"Requesting medication or an assistive device that has not been pre-approved requires an approval process wherein health professionals consider not only the benefit to the patient but factors such as facility security and cost."
- The State of Solitary: Restrictive Housing and Treatment of Incarcerated Delawareans with Mental Illness,
Delaware Community Legal Aid Society, Inc. Disabilities Law Program.
September, 2024.
"Two of the correctional facilities monitored had a separate Residential Treatment Unit (RTU) with mental health staff, services, and programming for individuals requiring that level of care for a mental health condition, while two did not."
- Hidden Behind Bars The Public Health Implications of Incompetency to Stand Trial, Paywall :(
Nathaniel P. Morris, MD, and Jacob M. Izenberg, MD.
December, 2023.
"People with mental illness are often arrested for low-level offenses...in many such cases, it's difficult to justify the involvement of forensic experts, months of waiting in jail for competency evaluation and restoration..."
(By creating a free account, you can access this NEJM article.)
- Monetary Sanctions: Legal Financial Obligations in US Systems of Justice,
Karin D. Martin et al.
January, 2018.
"A review of federally collected data on monetary sanctions reveals that a lack of consistent and exhaustive measures of monetary sanctions presents a unique problem for tracking both the prevalence and amount of legal financial obligations (LFOs) over tim"
- Guilty by association: When parole and probation rules disrupt support systems,
Prison Policy Initiative.
November, 2023.
"Association restrictions prohibit interactions between people on supervision and large swaths of the population, such as those with felony convictions or others on probation or parole. As a result, people must steer clear of certain places altogether."
- How Long is Long Enough? Task Force on Long Sentences Final Report,
Council on Criminal Justice.
March, 2023.
"While Task Force members expressed a diversity of opinions on second looks, they agreed that many people serving long sentences may not longer present a danger to public safety."
- State Violence and the Far-Reaching Impact of Dobbs,
Repro Legal Helpline.
June, 2024.
"We receive the most calls...about abortion pills, self-managed abortion, judicial bypass, and...general questions, like whether people can legally travel to another state for an abortion or what the gestational limit is in their state."
Wednesday, January 15 2025:
- Food and Nutrition in New York State Correctional Facilities,
Correctional Association of New York.
November, 2024.
"Among those who expressed concerns about the quality of the food served at the mess hall, many raised concerns about food safety or food preparation. Individuals also often characterized the food as unpalatable and expressed a strong aversion to it."
- Education Levels of Federally Sentenced Individuals,
United States Sentencing Commission.
December, 2023.
"For those with less than a high school degree, drug trafficking (42.0%) was the most common offense, followed by firearms (25.2%), immigration (11.5%), robbery (4.2%), and fraud (4.1%)."
- Ensuring Access to Quality Communications for Incarcerated People: Options for Advocates and State Legislators,
United Church of Christ Media Justice Ministry.
August, 2024.
"As rates have come down or are not burdensome to callers, the rate of usage has appropriately gone up...At the same time, call quality has gone down in some correctional facilities, marring the success of these efforts."
- Only Young Once: Alabama's Overreliance on School Pushout and For-Profit Youth Incarceration,
Southern Poverty Law Center.
December, 2024.
"Despite the inconsistency of local district policies, one thing that is consistent across the state is that Black students are disproportionately suspended from public schools."
- Only Young Once: The Urgent Need for Reform of Louisiana's Youth Justice System,
Southern Poverty Law Center.
July, 2023.
"From 2017-2018, Louisiana had the third-highest out-of-school suspension rate (8.98%) and second-highest expulsion rate (0.81%) in the country."
- Only Young Once: The Case for Mississippi's Investment in Youth Decarceration,
Southern Poverty Law Center.
October, 2023.
"Mississippi's approach to youth justice is built on debunked notions of Black criminality, inadequate funding for community resources, and a school system that suspends a Black student every 15 minutes."
- Only Young Once: The Systemic Harm of Florida's School-to-Prison Pipeline and Youth Legal System,,
Southern Poverty Law Center.
September, 2024.
"Florida is the national leader in the total number of incarcerated children in both adult prisons and jail facilities combined as of the most recent data available."
Tuesday, January 14 2025:
- The Death Row Phenomenon: A Prohibition Against Torture, Cruel, Inhuman and Degrading Treatment or Punishment,
Nkem Adeleye.
March, 2022.
"This Article explores the possibility of the death row phenomenon, as a legal concept, becoming widely accepted and ultimately preventing the execution of another category of offenders."
- Sentences Imposed on Those Convicted of Felony Illegal Possession of a Firearm in Illinois,
Loyola University Chicago Center for Criminal Justice Research, Policy, and Practice.
July, 2021.
"As a result of increased arrests, and mandatory prison sentences for most firearm possession offenses, prison admissions for these crimes increased 27% between 2014 and 2019, while admissions for all other crimes fell 38%"
- Predicting and Preventing Gun Violence: An Experimental Evaluation of READI Chicago,
Monica P. Bhatt et al.
January, 2023.
"There is no statistically significant change in an index combining three measures of serious violence, the study's primary outcome. But one component, shooting and homicide arrests, shows a suggestive decline of 64 percent."
- Immigration Detention As An Obstacle To Decarceration,
Pedro Gerson.
October, 2021.
"There is empirical evidence showing a causal connection between empty jail bed space and rising immigration detention at the local level."
- An examination of conditions of confinement: Incarcerated/detained youth in the custody of the Connecticut Department of Corrections,
Connecticut Office of the Child Advocate.
November, 2024.
"Between January 1, 2024 and September 30, 2024, there were 192 placements in RAMP (disciplinary confinement), involving 66 youth. This represents a significant increase over 2023."