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. The objective of this study was to determine how homicide investigators use evidence during the course of their investigations. Data on 294 homicide cases (315 victims) that occurred in Cleveland between 2008 and 2011 was collected from investigative reports, forensic analysis reports, prosecutors and homicide investigators, provided by the Cleveland Ohio Police Department, Cuyahoga County Medical Examiner's Office, and Cuyahoga County Clerk of Courts. The study collection includes 1 Stata data file (NIJ_Cleveland_Homicides.dta, n=294, 109 variables).

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 project had three goals. One, to provide a more detailed description of injury evidence and biological evidence in sexual assault cases, including their timing relative to arrests. A second goal was to examine the relationship of forensic evidence to arrests. A third goal was to examine injury evidence and biological evidence in certain types of cases in which it may have had greater impact. To achieve these goals, the researchers created analysis data files that merged data from the Massachusetts Provided Sexual Crime Report, forensic evidence data from the two crime laboratories serving the state and data on arrests and criminal charges from 140 different police agencies.

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.To assess the current practices in cold-case investigations, this study utilized a national online survey of law enforcement agencies (Cold Case Survey Data, n = 1,051) to document the range of ways in which cold-case work is conducted and assess how this organization affects cold-case clearance rates. In November 2008, the chiefs of police in the sample were sent a letter explaining the purpose of the survey and inviting them to participate. Potential respondents were directed to the web-based survey instrument through a provided web address. The results from the national survey were used to select sites for an analysis of case files. Researchers chose three jurisdictions that conducted a large number of cold-case homicide investigations: the District of Columbia, Baltimore, Maryland, and Dallas, Texas (Cold Case Homicide Data, n = 429). To these three sites, researchers added Denver, Colorado (Cold Case Sexual Assault Data, n = 105) because it had received a Department of Justice grant to conduct testing of DNA material in sexual assault cold cases. At all four sites, cold cases were examined for seven categories of data including victim's characteristics, crime context, motivation, human capital, physical evidence, basis for cold-case investigations and cold-case actions.

The purpose of the study was to investigate the role and impact of forensic science evidence on the criminal justice process. The study utilized a prospective analysis of official record data that followed criminal cases in five jurisdictions (Los Angeles County, California; Indianapolis, Indiana; Evansville, Indiana; Fort Wayne, Indiana; and South Bend, Indiana) from the time of police incident report to final criminal disposition. The data were based on a random sample of the population of reported crime incidents between 2003 and 2006, stratified by crime type and jurisdiction. A total of 4,205 cases were sampled including 859 aggravated assaults, 1,263 burglaries, 400 homicides, 602 rapes, and 1,081 robberies. Descriptive and impact data were collected from three sources: police incident and investigation reports, crime lab reports, and prosecutor case files. The data contain a total of 175 variables including site, crime type, forensic variables, criminal offense variables, and crime dispositions variables.

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. Seeking to measure the usage of Familial DNA Searching (FDS) to aid in criminal investigations, this study utilized a multi-phase, mixed methods approach to obtain data on FDS policies and practices in the United States. This study includes data from the National Survey of CODIS Laboratories, which was compiled after two expert roundtables, a literature and policy scan of practice, cost modeling, and state case studies. The study includes one SPSS data file: FDS_National_Survey_of_CODIS_Labs_Data.sav

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. The qualitative Case Study data is not available as part of this data collection at this time.The purpose of the study was to examine: (1) which entities pay for sexual assault medical forensic exams (MFEs) in state and local jurisdictions throughout the United States, and the policies and practices around determining payment; (2) what services are provided in the exam process and how exams are linked to counseling, advocacy, and other services; (3) whether exams are provided to victims regardless of their reporting or intention to report the assault to the criminal justice system; (4) how MFE kits are being stored for victims who choose not to participate in the criminal justice system process; and (5) whether Violence Against Women Act (VAWA) 2005 requirements are generally being met throughout the country.Researchers conducted national surveys to obtain state-level information from state Services Training Officers Prosecutors (STOP) administrators (SSAs), victim compensation fund administrators, and state-level sexual assault coalitions. Surveys were distributed to potential respondents in all 50 states, the District of Columbia, and United States territories that held these state-level positions. Researchers also distributed local-level surveys though an extensive listserv maintained by the National Sexual Violence Resource Center (NSVRC). Researchers also conducted case studies in 19 local jurisdictions across six states were selected for case studies.Interviewees included the victim compensation fund administrator, state STOP administrator, state coalition director (or an appointed staff member) and sometimes crime lab or other state justice agency personnel, at the state level, and;law enforcement, prosecution, victim advocacy staff, and healthcare-based exam providers at the local level. Finally, researchers concluded each local jurisdiction visit with a focus group with victims of sexual assault. Data collection efforts included: a national survey of crime victim compensation fund administrators (Compensation Data, n = 26); a national survey of Services Training Officers Prosecutors (STOP) grant program administrators (SSA Data, n = 52); a national survey of state sexual assault coalitions (Coalitions Data, n = 47); and a survey of local community-based victim service providers (Local Provider Data, n = 489).

This data collection focuses on adult cases of serious crime such as homicide (and related death investigations), rape, robbery, aggravated assault/battery, burglary, and arson. Data are included for Peoria, Illinois, Chicago, Illinois, Kansas City, Missouri, and Oakland, California. The data consist of police, court, and laboratory records from reports submitted by police personnel during investigations of suspected criminal offenses. The primary source of information was police case files. Prosecutor and court files were reviewed for information regarding the disposition of suspects who were arrested and formally charged. Crime laboratory reports include information concerning the evidence submitted and the examiner's worksheets, notes, and final results. There are eight files in this dataset. Each of the four cities has one file for cases with physical evidence and one file for cases in which physical evidence was not collected or examined.

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 presents a research-informed approach to identify the most efficient practices for addressing un-submitted sexual assault kits (SAKs) that accrue in U.S. law enforcement agencies (LEAs) as well as untested SAKs pending analysis in crime laboratories. The study examined intra- and interagency dynamics associated with SAK processing efficiency in a linked sample of crime laboratories. SAK outputs and inputs were assessed for laboratories that conduct biological forensic analysis and LEAs that submit SAK evidence to these laboratories. Production functions were estimated to examine effects of labor and capital inputs, in addition to policies, management systems, and cross-agency coordination on efficiency. Six jurisdictions were recruited for site visits, and qualitative methods were used to understand how LEAs, laboratories, and prosecutors implement practices that affect efficiency.This study contains 7 data files including:Crime Lab_Raw.dta (n=147; variables =242)Crosswalk File.dta (n=2337; variables=2)lab_analysis_sample_2017-04-06.dta (n=132; variables=92)LEA Communication LCAs.dta (n=321; variables=15merged_analysis_file_JH2017-04-30.dta (n=273; variables=117)policy Class probabilities_LABS.dta (n=139; variables=19)SAK LAB COMMUNICATION LCA.dta (n=134; variables=15)

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 research examined the reliability of the Federal Bureau of Investigation's National Incident-Based Reporting System (NIBRS) arrests data. Data on crime incidents, including data on whether an arrest was made or a summons issued, are collected from hundreds of law enforcement agencies (LEAs) across the country and then combined by the FBI into a national data set that is frequently used by researchers. This study compared arrest data in a sample of cases from NIBRS data files with arrest and summons data collected on the same cases directly from LEAs. The dataset consists of information collected from the Massachusetts NIBRS database combined with data from LEAs through a survey and includes data on arrests, summons, exceptional clearances, applicable statutes and offense names, arrest dates, and arrestees' sex, race, ethnicity and age for a sample of assault incidents between 2011 and 2013 from the NIBRS. The collection contains one SPSS data file (n=480; 32 variables). Qualitative data are not available as part of this collection.

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 expect 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) is further information is needed. This collection is composed of archived news articles and court records reporting (n=6,724) on the arrest(s) of law enforcement officers in the United States from 2005-2011. Police crimes are those crimes committed by sworn law enforcement officers given the general powers of arrest at the time the offense was committed. These crimes can occur while the officer is on or off duty and include offenses committed by state, county, municipal, tribal, or special law enforcement agencies.Three distinct but related research questions are addressed in this collection:What is the incidence and prevalence of police officers arrested across the United States? How do law enforcement agencies discipline officers who are arrested?To what degree do police crime arrests correlate with other forms of police misconduct?