nmm 22 4500 ICPSR09398 MiAaI m f a u cr mn mmmmuuuu 130519s1991 miu f a eng d (MiAaI)ICPSR09398 MiAaI MiAaI Gang Involvement in "Rock" Cocaine Trafficking in Los Angeles, 1984-1985 [electronic resource] Malcolm W. Klein , Cheryl L. Maxson 2006-03-30 Ann Arbor, Mich. Inter-university Consortium for Political and Social Research [distributor] 1991 ICPSR 9398 Numeric Title from ICPSR DDI metadata of 2013-05-19. AVAILABLE. This study is freely available to the general public. Also available as downloadable files. The purpose of this data collection was to investigate the possible increase in gang involvement within cocaine and "rock" cocaine trafficking. Investigators also examined the relationships among gangs, cocaine trafficking, and increasing levels of violence. They attempted to determine the effects of increased gang involvement in cocaine distribution in terms of the location of an incident, the demographic profiles of suspects, and the level of firearm use. They also looked at issues such as whether the connection between gangs and cocaine trafficking yielded more drug-related violence, how the connection between gangs and cocaine trafficking affected police investigative processes such as intra-organizational communication and the use of special enforcement technologies, what kinds of working relationships were established between narcotics units and gang control units, and what the characteristics were of the rock trafficking and rock house technologies of the dealers. Part 1 (Sales Arrest Incident Data File) contains data for the cocaine sales arrest incidents. Part 2 (Single Incident Participant Data File) contains data for participants of the cocaine sales arrest incidents. Part 3 (Single Incident Participant Prior Arrest Data File) contains data for the prior arrests of the participants in the cocaine arrest incidents. Part 4 (Multiple Event Incident Data File) contains data for multiple event incidents. Part 5 (Multiple Event Arrest Incident Data File) contains data for arrest events in the multiple event incidents. Part 6 (Multiple Event Incident Participant Data File) contains data for the participants of the arrest events. Part 7 (Multiple Event Incident Prior Arrest Data File) contains data for the prior arrest history of the multiple event participants. Part 8 (Homicide Incident Data File) contains data for homicide incidents. Part 9 (Homicide Incident Suspect/Victim Data File) contains data for the suspects and victims of the homicide incidents. Major variables characterizing the various units of observation include evidence of gang involvement, presence of drugs, presence of a rock house, presence of firearms or other weapons, presence of violence, amount of cash taken as evidence, prior arrests, and law enforcement techniques. Cf.: http://dx.doi.org/10.3886/ICPSR09398.v1 police departments icpsr police investigations icpsr violence icpsr cocaine icpsr drug related crimes icpsr drug traffic icpsr gangs icpsr law enforcement icpsr NACJD XIV. Homicide Studies NACJD XI. Drugs, Alcohol, and Crime ICPSR XVII.E. Social Institutions and Behavior, Crime and the Criminal Justice System Klein, Malcolm W. Maxson, Cheryl L. Inter-university Consortium for Political and Social Research. ICPSR (Series) 9398 Access restricted ; authentication may be required: http://dx.doi.org/10.3886/ICPSR09398.v1 nmm 22 4500 ICPSR02570 MiAaI m f a u cr mn mmmmuuuu 130519s1999 miu f a eng d (MiAaI)ICPSR02570 MiAaI MiAaI Impact of Gang Migration [electronic resource] Effective Responses by Law Enforcement Agencies in the United States, 1992 Cheryl L. Maxson 2006-03-30 Ann Arbor, Mich. Inter-university Consortium for Political and Social Research [distributor] 1999 ICPSR 2570 Numeric Title from ICPSR DDI metadata of 2013-05-19. AVAILABLE. This study is freely available to the general public. Also available as downloadable files. This study was the first attempt to investigate gang migration systematically and on a national level. The primary objectives of the study were (1) to identify the scope of gang migration nationally, (2) to describe the nature of gang migration, (3) to assess the impact of gang migration on destination cities, and (4) to describe the current law enforcement responses to the migration of gangs and identify those that appeared to be most effective for various types of migration. Two phases of data collection were used. The major objective of the initial phase was to identify cities that had experienced gang migration (Part 1). This was accomplished by distributing a brief mail questionnaire in 1992 to law enforcement agencies in cities identified as potential gang or gang migration sites. The second major phase of data collection involved in-depth telephone interviews with law enforcement officers in cities that had experienced gang migration in order to develop descriptions of the nature of migration and police responses to it (Part 2). For Part 1, information was collected on the year migration started, number of migrants in the past year, factors that deter gang migration, number of gang members, names of gangs, ethnic distribution of gang members and their drug market involvement, number of gang homicides, number of 1991 gang "drive-bys", and if gangs or narcotics were specified in the respondent's assignment. For Part 2, information was collected on the demographics of gang members, the ethnic percentage of drug gang members and their involvement in distributing specific drugs, and the influence of gang migrants on local gang and crime situations in terms of types and methods of crime, drug distribution activities, technology/equipment used, and targets of crime. Information on patterns of gang migration, including motivations to migrate, drug gang migration, and volume of migration, was also collected. Local responses to gang migration covered information sources, department policies relative to migration, gang specialization in department, approaches taken by the department, and information exchanges and coordination among local, state, and federal agencies. Cf.: http://dx.doi.org/10.3886/ICPSR02570.v1 cities icpsr drive-by shootings icpsr drug traffic icpsr gang members icpsr gang migration icpsr gang violence icpsr gangs icpsr police response icpsr ICPSR XVII.E. Social Institutions and Behavior, Crime and the Criminal Justice System NACJD XIV. Homicide Studies NACJD VII. Crime and Delinquency Maxson, Cheryl L. Inter-university Consortium for Political and Social Research. ICPSR (Series) 2570 Access restricted ; authentication may be required: http://dx.doi.org/10.3886/ICPSR02570.v1 nmm 22 4500 ICPSR08934 MiAaI m f a u cr mn mmmmuuuu 130519s1988 miu f a eng d (MiAaI)ICPSR08934 MiAaI MiAaI Police Response to Street Gang Violence in California [electronic resource] Improving the Investigative Process, 1985 Malcolm W. Klein , Cheryl L. Maxson , Margaret A. Gordon 2006-01-12 Ann Arbor, Mich. Inter-university Consortium for Political and Social Research [distributor] 1988 ICPSR 8934 Numeric Title from ICPSR DDI metadata of 2013-05-19. AVAILABLE. This study is freely available to the general public. Also available as downloadable files. 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). Cf.: http://dx.doi.org/10.3886/ICPSR08934.v1 crime icpsr criminal justice system icpsr death icpsr demographic characteristics icpsr gangs icpsr murder icpsr violence icpsr NACJD IX. Police ICPSR XVII.E. Social Institutions and Behavior, Crime and the Criminal Justice System NACJD XIV. Homicide Studies Klein, Malcolm W. Maxson, Cheryl L. Gordon, Margaret A. Inter-university Consortium for Political and Social Research. ICPSR (Series) 8934 Access restricted ; authentication may be required: http://dx.doi.org/10.3886/ICPSR08934.v1 nmm 22 4500 ICPSR02792 MiAaI m f a u cr mn mmmmuuuu 130519s2000 miu f a eng d (MiAaI)ICPSR02792 MiAaI MiAaI Prevalence of Five Gang Structures in 201 Cities in the United States, 1992 and 1995 [electronic resource] Malcolm W. Klein , Cheryl L. Maxson 2005-11-04 Ann Arbor, Mich. Inter-university Consortium for Political and Social Research [distributor] 2000 ICPSR 2792 Numeric Title from ICPSR DDI metadata of 2013-05-19. AVAILABLE. This study is freely available to the general public. Also available as downloadable files. The goal of this study was to provide useful data on how street gang crime patterns (by amount and type of offense) relate to common patterns of street gang structure, thus providing focused, data-based guidelines for gang control and intervention. The data collection consists of two components: (1) descriptions of cities' gang activities taken from an earlier study of gang migration in 1992, IMPACT OF GANG MIGRATION: EFFECTIVE RESPONSES BY LAW ENFORCEMENT AGENCIES IN THE UNITED STATES, 1992 (ICPSR 2570), and (2) gang structure data from 1995 interviews with police agencies in a sample of the same cities that responded to the 1992 survey. Information taken from the 1992 study includes the year of gang emergence in the city, numbers of active gangs and gang members, ethnic distribution of gang members, numbers of gang homicides and "drive-bys" in 1991, state in which the city is located, and population of the city. Information from the 1995 gang structures survey provides detail on the ethnic distributions of gangs, whether a predominant gang structure was present, each gang structure's typical size, and the total number of each of the five gang structures identified by the principal investigators -- chronic traditional, emergent traditional, emergent integrated, expanded integrated, and specialty integrated. City crime information was collected on the spread of arrests, number of serious arrests, volume and specialization of crime, arrest profile codes and history, uniform crime rate compared to city population, ratio of serious arrests to total arrests, and ratio of arrests to city population. Cf.: http://dx.doi.org/10.3886/ICPSR02792.v1 cities icpsr crime patterns icpsr drive-by shootings icpsr gang members icpsr gang migration icpsr gang violence icpsr gangs icpsr homicide icpsr intervention icpsr law enforcement icpsr NACJD VII. Crime and Delinquency ICPSR XVII.E. Social Institutions and Behavior, Crime and the Criminal Justice System NACJD XIV. Homicide Studies Klein, Malcolm W. Maxson, Cheryl L. Inter-university Consortium for Political and Social Research. ICPSR (Series) 2792 Access restricted ; authentication may be required: http://dx.doi.org/10.3886/ICPSR02792.v1