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These data are part of NACJD's Fast Track Release and are distributed as they there received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except of the removal of direct identifiers. Users should refer to the accompany readme file for a brief description of the files available with this collections and consult the investigator(s) if further information is needed.

This study examines municipal crime levels and changes over a nine year time frame, from 2000-2008, in the fifth largest primary Metropolitan Statistical Area (MSA) in the United States, the Philadelphia metropolitan region. Crime levels and crime changes are linked to demographic features of jurisdictions, policing arrangements and coverage levels, and street and public transit network features.

Recently there has been an influx of changes in gun legislation in the United States. There is now a growing trend in states adopting "constitutional carry" laws, which allow citizens of legal age who have not been legislatively denied the right, to legally and publicly possess and carry a concealed firearm without a permit. As of April 2019, fifteen states have passed constitutional carry (i.e., permit-less) firearm legislation. Two additional states, Kentucky and Oklahoma, will become the 16th and 17th states to allow constitutional carry before the end of 2019, and additional states (e.g., Alabama) are currently considering adopting constitutional carry in the future. Though arguments for (e.g., deterrent effects) and against (e.g., increased exposure to firearms in public) the relaxation of concealed carry laws often cite the potential impact of such laws on public safety, a review of available research provides limited insight on the effects of constitutional carry legislation on crime, violence, and other outcomes. There is also little known about the impact of constitutional carry on changes in police-citizen encounters, officer safety, and changes in police training.

The proposed study seeks to fill this void in empirical knowledge through a multi-phase analytical approach using data gathered from three cities within two states that recently passed constitutional carry laws. Specifically, this study seeks to examine the impact of constitutional carry legislation on 1) firearm and offense counts in Lexington (KY), Oklahoma City (OK), and Tulsa (OK); 2) arrest reports related to firearm arrests; and (3) officer perceptions of safety, training, and police-citizen encounters. Each data source aligns with a specific analytic approach, including interrupted time series analysis and frequency/bivariate analyses

This study will contribute to the body of research using a strong multi-methodological approach, address a gap in rigorous empirical scholarship regarding the impact of gun legislation and crime and public/police safety.

The Multi-Site Adult Drug Court Evaluation (MADCE) study included 23 drug courts and 6 comparison sites selected from 8 states across the country. The purpose of the study was to: (1) Test whether drug courts reduce drug use, crime, and multiple other problems associated with drug abuse, in comparision with similar offenders not exposed to drug courts, (2) address how drug courts work and for whom by isolating key individual and program factors that make drug courts more or less effective in achieving their desired outcomes, (3) explain how offender attitudes and behaviors change when they are exposed to drug courts and how these changes help explain the effectiveness of drug court programs, and (4) examine whether drug courts generate cost savings.

Offenders in all 29 sites were surveyed in 3 waves, at baseline, 6 months later, and 18 months after enrollment. The research comprises three major components: process evaluation, impact evaluation, and a cost-benefit analysis. The process evaluation describes how the 23 drug court sites vary in program eligibility, supervision, treatment, team collaboration, and other key policies and practices. The impact evaluation examines whether drug courts produce better outcomes than comparison sites and tests which court policies and offender attitudes might explain those effects. The cost-benefit analysis evaluates drug court costs and benefits.

These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

This study contains data from an on-line national survey of 2,050 respondents aged 18+. The data were collected to provide new policy-relevant evidence on the public's attitude towards white-collar and corporate frauds by asking questions about the public's willingness to pay for reducing white-collar crimes when provided information about the estimate of financial losses, context and seriousness. Further, the study quantifies public perceptions of seriousness link to specific policy preferences.

This study includes one STATA data file: Formatted_WTP_Dataset_11-10-16.dta (138 variables, 2050 cases).