Operation Hardcore [Crime] Evaluation: Los Angeles, 1976-1980 (ICPSR 9038)

Published: Jan 12, 2006

Principal Investigator(s):
Los Angeles District Attorney's Office


Version V2

This evaluation was developed and implemented by the Los Angeles District Attorney's Office to examine the effectiveness of specialized prosecutorial activities in dealing with the local problem of rising gang violence, in particular the special gang prosecution unit Operation Hardcore. One part of the evaluation was a system performance analysis. The purposes of this system performance analysis were (1) to describe the problems of gang violence in Los Angeles and the ways that incidents of gang violence were handled by the Los Angeles criminal justice system, and (2) to document the activities of Operation Hardcore and its effect on the criminal justice system's handling of the cases prosecuted by that unit. Computer-generated listings from the Los Angeles District Attorney's Office of all individuals referred for prosecution by local police agencies were used to identify those individuals who were subsequently prosecuted by the District Attorney. Data from working files on all cases prosecuted, including copies of police, court, and criminal history records as well as information on case prosecution, were used to describe criminal justice handling. Information from several supplementary sources was also included, such as the automated Prosecutors Management Information System (PROMIS) maintained by the District Attorney's Office, and court records from the Superior Court of California in Los Angeles County, the local felony court.

Los Angeles District Attorney’s Office. Operation Hardcore [Crime] Evaluation: Los Angeles, 1976-1980. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12. https://doi.org/10.3886/ICPSR09038.v2

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United States Department of Health and Human Services. National Institutes of Health. National Institute of Mental Health (81-IJ-CX-K004)

United States Department of Justice. Office of Justice Programs. National Institute of Justice

1976 -- 1980

Data for the seventh file named in the codebook (Prior Criminal Record Data) are not available from ICPSR.

First, cases involving gang-related homicide were selected, since the majority of cases prosecuted by Operation Hardcore were gang homicide cases. Second, individuals suspected by police as being involved in these cases were identified by police records. Third, the District Attorney's listings of individuals against whom criminal charges had been accepted or rejected for prosecution were reviewed for the names identified in the second step. Thus all names from step two were classified as accepted, rejected, or not referred.

All cases referred by local police agencies for prosecution to the Los Angeles District Attorney's office during 1976-1980.

Los Angeles District Attorney's Office records, PROMIS (Prosecutors Management Information System), and Los Angeles County police, court, and criminal history records

administrative records data



2006-01-12 All files were removed from dataset 7 and flagged as study-level files, so that they will accompany all downloads.

2005-11-04 On 2005-03-14 new files were added to one or more datasets. These files included additional setup files as well as one or more of the following: SAS program, SAS transport, SPSS portable, and Stata system files. The metadata record was revised 2005-11-04 to reflect these additions.

1984-03-18 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Checked for undocumented or out-of-range codes.


  • 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 public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.

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This dataset is maintained and distributed by the National Archive of Criminal Justice Data (NACJD), the criminal justice archive within ICPSR. NACJD is primarily sponsored by three agencies within the U.S. Department of Justice: the Bureau of Justice Statistics, the National Institute of Justice, and the Office of Juvenile Justice and Delinquency Prevention.