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In the aftermath of the attacks on September 11, 2001, and subsequent terrorist attacks elsewhere around the world, a key counterterrorism concern was the possible radicalization of Muslims living in the United States. The purpose of the study was to examine and identify characteristics and practices of four American Muslim communities that have experienced varying levels of radicalization. The communities were selected because they were home to Muslim-Americans that had experienced isolated instances of radicalization. They were located in four distinct regions of the United States, and they each had distinctive histories and patterns of ethnic diversity.

This objective was mainly pursued through interviews of over 120 Muslims located within four different Muslim-American communities across the country (Buffalo, New York; Houston, Texas; Seattle, Washington; and Raleigh-Durham, North Carolina), a comprehensive review of studies an literature on Muslim-American communities, a review of websites and publications of Muslim-American organizations and a compilation of data on prosecutions of Muslim-Americans on violent terrorism-related offenses.

The goal of the project was to improve police officers' sleep, health, safety, and wellness, thus improving the quality of police services. Using a multi-phase, mixed method approach, the core objectives included:

1. Measure the effects of work schedules and sleep loss on Seattle Police Department (SPD) officer health, wellness, safety, and quality of life.

2. Develop a fatigue risk management strategy, informed by the data collected during objective one.

3. Using a randomized control trial design, implement the resulting fatigue risk management strategy across the SPD, which is a large municipal police department (approximately 1,500 sworn officers)

4. Measure the effectiveness of the fatigue risk management strategy.

The main research questions the study sought to address were as follows:

1. What are the effects of shift work, work hours, sleep loss, and fatigue on police officers' safety, health, and quality of life?

2. Can a fatigue risk management strategy influence these effects?

Variables include measures of officers' sleep patterns and sleep quality, physical and mental health metrics, descriptions of the officers' role at the SPD, and demographic variables including age, gender, and race/ethnicity.

This project sought to gather and analyze data on the effects of marijuana legalization from primary and secondary data sources that are both local and national in scope, and at both the individual and aggregate level. Since 1996, 37 states have passed statutes legalizing marijuana for medical and/or recreational use, while it has remained illegal under federal law. Jurisdictional and temporal variation in law creates a complex environment and substantial challenges for police and prosecutors charged with enforcement, and little is known about the justice system processing, public safety, and public health outcomes of evolving laws and policies.

Secondary criminal justice and public health data were gathered from federal, state, and local sources. Each source has a sufficiently long time series to provide statistical power and to allow for sometimes gradual implementation. The design exploits geographic and temporal variation in the implementation of marijuana law, using a difference-in-differences design that compares outcomes in states which implemented the policies with states that did not, before and after implementation.

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 measures the size and structure of the underground commercial sex economy in eight major US cities: San Diego, Seattle, Dallas, Denver, Washington, DC, Kansas City, Atlanta, and Miami. The goals of this study were to derive a more rigorous estimate of the underground commercial sex economy (UCSE) in eight major US cities and to provide an understanding of the structure of this underground economy.

Researchers relied on a multi-method approach using both qualitative and quantitative data to estimate the size of UCSE including:

1. Collecting official data on crime related to the underground weapons and drugs economies
2. Conducting semi-structured interviews with convicted traffickers, pimps, child pornographers, and sex workers at the federal, state, and local levels
3. Conducting semi-structured interviews with local and federal police investigators and prosecutors to inform our analysis of the interrelationship across different types of underground commercial sex activity.

Clearance rates for most crimes have remained low and stable for decades (Braga et al., 2011), despite advances in police technologies (Koper et al., 2015). Many police agencies have developed triaging practices for criminal investigations using solvability factors to guess which cases are most likely to be solved and to allocate investigative resources to those crimes (Eck, 1983; 1992). This practice partially stems from a persistent belief that resolving crimes and the resulting clearance rates are due to circumstances of the crime and community context, and are beyond the control of police. However, a growing body of research has challenged this belief, demonstrating that enhanced investigative efforts can improve crime clearance rates beyond solvability factors (Braga and Dusseault, 2018; Lum and Wellford, 2023).

In this study, the research team sought to determine if investigative follow-ups could increase clearance rates for robbery and burglary cases (frequently occurring crime types with traditionally low clearance rates) and increase victim satisfaction with police services. Agencies selected for the study were the Seattle Police Department (SPD) in Seattle, Washington, and the Rochester Police Department (RPD) in Rochester, New York. Both agencies triaged a large proportion of robbery cases and would have a large enough sample size to successfully carry out an experiment.

The original study design was a randomized controlled trial. In both sites, robbery cases would be allocated to either the intervention condition--an investigative follow-up conducted by an officer during their daily patrol assignment--or the control condition with no follow-up. Challenges to personnel and agency funding from the COVID-19 pandemic, the murder of George Floyd, and other officer-involved deaths in 2020 led to difficulties implementing the study as initially designed. The experiment was not initiated in Rochester, and initiated but not completed in Seattle. Therefore, the team transitioned to a natural quasi-experiment design in Rochester and added a case analysis of robberies in Seattle.

This collection contains three datasets: victim satisfaction surveys from Seattle (DS1, n=39) and Rochester (DS2, n=37), and supplemental reports on follow-ups made during the Seattle experiment implementation (DS3, n=82).

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.

For this study, researchers conducted an experimental evaluation of a training program aimed at promoting the use of procedural justice by officers in the Seattle Police Department (SPD). After identifying eligible officers using a specially designed High Risk Circumstance (HRC) model, researchers arranged non-disciplinary supervisory meetings for participants in which procedural justice behaviors were modeled. Participating officers were then asked to fill out comment cards about the experience.

Using the control and engagement groups, researchers evaluated the impact that procedural justice training had on a number of outcomes including arrests, warnings and citations, use of force, and citizen complaints. In addition to participant comment cards, researchers assessed outcomes by analyzing the administrative data collected by the Seattle Police Department.

The Rainier Beach Campus Safety Continuum (RBCSC), funded by the National Institute of Justice's FY 2016 Comprehensive School Safety Initiative, was a community-led, place-based, evidence-informed approach to addressing school and community safety and reducing racial disparity in school discipline and police contact in the Rainier Beach neighborhood of Seattle, Washington. The initiative built upon two existing local initiatives, Rainier Beach: A Beautiful Safe Place for Youth, a community-led place-based approach to addressing youth crime and victimization at hot spots, and Rainier Beach: Beautiful!, an application of Positive Behavioral Interventions and Supports (PBIS) that extends from the schools into community facilities and businesses.

The goal of the project was to examine whether PBIS can be successfully combined with school-based restorative justice (RJ) to increase student support and reduce racial disparity and, furthermore, whether this integrated PBIS-RJ program could also be extended into wider community and place-based approaches to change social norms and improve overall rates of youth crime and community safety.

The overall project ran from 2017 to 2022. The evaluation examines the effects of the program on crime, academic performance and school discipline, student perceptions of school climate, and community perceptions of neighborhood safety in Rainier Beach, several comparison schools, and neighborhoods. Behavioral variables from the police offense reports and police calls for service included offense details and classifications. Demographic variables from the community survey, school climate data, and school administrative data included gender and race/ethnicity.

The objective of the Seattle Neighborhoods and Crime Survey (SNCS) was to test multilevel theories of neighborhood social organization and criminal violence. It was funded by the National Science Foundation (SES-0004324), and the National Consortium on Violence Research (SBR-9513040). Using the concept of differential neighborhood organization, the investigators posited that neighborhood crime is a function of informal social control against crime and informal organization in favor of crime. Informal neighborhood control against crime consists of neighborhood attachment, social capital, and collective efficacy. The study tested the hypothesis that individual social ties are explained by a rational choice model, which in turn produces neighborhood social capital that can be used to achieve collective goals. It also tested the hypothesis that neighborhoods rich in social capital had greater collective efficacy, which in turn, helped produce safe neighborhoods. Organization in favor of crime consists of violent codes of the street. The study tested the hypothesis that residents from disadvantaged neighborhoods tend to distrust police and other agents of conventional institutions, and consequently are more likely to participate in street culture, in which violence is a way of obtaining street credibility and status, as well as resolving disputes. The project has also examined dimensions of neighboring, and the causes and consequences of fear of crime.

The study used a telephone survey of households within all 123 census tracts in the city of Seattle, WA, conducted in 2002-2003. The sampling frame was designed by investigators at the University of Washington, with three objectives in mind: (a) to gain a random sample of households within each of 123 census tracts; (b) to obtain a disproportionate number of racial and ethnic minorities using an ethnic oversample; and (c) to obtain a replication sample of Terrance Miethe's 1990 victimization survey in 100 Seattle neighborhoods [Testing Theories of Criminality and Victimization in Seattle, 1960-1990]. Specific samples were drawn by Genesys, a sampling firm in Philadelphia, PA, using a constantly-updated compilation of white pages. Telephone interviews were conducted by the Social and Behavioral Research Institute at California State University, San Marcos, using computer-assisted telephone interviewing (CATI) technology.

Respondents were asked about household demographics, such as race, gender, residential mobility, age distribution of the household, and income, their perceptions and assessments of their neighborhoods (including safety, disorder, and crime), neighbors, and relations with police. A variety of questions about neighboring were asked, including social capital (intergenerational closure, reciprocated exchange, and participation in neighborhood associations), attachment to their neighborhood, and collective efficacy (child-centered social control). Respondents were asked about routine activities including taking steps to protect their homes, spending time in bars and nightclubs, and leaving their home unattended. Questions about fear of crime included personal fear as well as altruistic fear for other members of the household, and questions about racial attitudes included residential preferences by race composition of the neighborhood. A victimization inventory modeled after the National Crime Victimization Survey was used for burglary, vandalism, stolen property, violence, and robbery. Demographic information includes age, race, sex, education, martial status, household income, whether respondent was a student, employment status, religious affiliation, approximate value of home, monthly rent including utilities, residence history in the last five years, whether respondent was born in the Unites States, and number of people currently living in the respondent's household.