Police Response to Street Gang Violence in California: Improving the Investigative Process, 1985 (ICPSR 8934)

Published: Jan 12, 2006

Principal Investigator(s):
Malcolm W. Klein; Cheryl L. Maxson; Margaret A. Gordon


Version V1

This data collection examines gang and non-gang homicides as well as other types of offenses in small California jurisdictions. Data are provided on violent gang offenses and offenders as well as on a companion sample of non-gang offenses and offenders. Two separate data files are supplied, one for participants and one for incidents. The participant data include age, gender, race, and role of participants. The incident data include information from the "violent incident data collection form" (setting, auto involvement, and amount of property loss), and the "group indicators coding form" (argot, tattoos, clothing, and slang terminology).

Klein, Malcolm W., Maxson, Cheryl L., and Gordon, Margaret A. Police Response to Street Gang Violence in California:  Improving the Investigative Process, 1985. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12. https://doi.org/10.3886/ICPSR08934.v1

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United States Department of Justice. Office of Justice Programs. National Institute of Justice (84-IJ-CX-0052)



Separate gang-designated and non-gang-designated samples were selected from cases that included at least one named or described suspect between the ages of 10 and 30.

Homicides and violent crimes in five small California jurisdictions.

police investigation files

event/transaction data



2006-01-12 All files were removed from dataset 6 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.

2006-01-12 All files were removed from dataset 3 and flagged as study-level files, so that they will accompany all downloads.

1988-10-25 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.

  • The citation of this study may have changed due to the new version control system that has been implemented.
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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.