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|a This study examined the effects of timing and level of legal supervision in controlling antisocial behavior and promoting prosocial behavior in chronic addict offenders. The study sought to answer several questions: (1) What is the effect of legal supervision on the criminal behavior of addicts? (2) Does legal supervision have time-course effects? (3) What are the differential effects of varying types of legal supervision (e.g., probation, parole, urinalysis, higher or lower number of contacts per month)? Data were obtained by conducting retrospective interviews with four separate groups of subjects from four distinct research projects previously conducted in Southern California (McGlothlin, Anglin, and Wilson, 1977, Anglin, McGlothlin, and Speckart, 1981, Anglin, McGlothlin, Speckart, and Ryan, 1982, and McGlothlin and Anglin, 1981). The first group were male patients in the California Civil Addict Program, admitted in 1962-1964, who were interviewed for this survey in 1974-1975. The second group was a sample of addicts drawn from male first admissions between the years 1971-1973 from Los Angeles, San Bernardino, and Orange County methadone maintenance programs. These respondents were interviewed during the years 1978-1979, an average of 6.6 years after admission. The third group consisted of male and female methadone maintenance patients selected from rosters of clients active on June 30, 1976, at clinics in Bakersfield and Tulare, California. These subjects were interviewed during 1978 and 1979, an average of 3.5 years after admission. The fourth group of subjects consisted of males and females who were active on September 30, 1978, at San Diego, Riverside, San Bernardino, and Orange County clinics and were interviewed during the years 1980-1981, an average of six years after their admission. Subjects included Anglo-American and Mexican-American males and females. The samples were generally representative of California methadone maintenance patients except for the second sample, which had been selected to study the impact of civil commitment parole status on the behavior of patients receiving methadone and was not necessarily representative of the overall population of admitted patients receiving methodone. Before the interview, a schematic time line on each offender was prepared, which included all known arrests and intervals of incarceration, legal supervision, and methadone treatment, based on criminal justice system and treatment program records. In discussion with the subject, the interviewer established the date of the first narcotics use on the time line, then proceeded chronologically through the time line, marking a change in narcotics use from less-than-daily use to daily use (or vice versa), or a change in the respondent's legal or treatment status, as a time interval. The interviewer repeated this process for successive intervals up through the date of the interview. Parts 1-8 consist of the interview data, with Forms 2 and 3 corresponding to the various intervals. There can be multiple intervals for each individual. Variables cover drug use, employment, criminal behavior, legal status, conditions of parole or probation, and drug treatment enrollment. Form 1 data contain background information on offenders, such as family and substance abuse history, and Form 4 data include other personal information as well as self-reported arrest and treatment histories. Parts 9 and 10, Master Data, were created from selected variables from the interview data. Parts 11 and 12, Arrest Data, were collected from official criminal justice records and describe each offender's arrests, such as month and year of arrest, charge, disposition, and arrest category. The datasets are split between the Southern California (Los Angeles, San Bernardino, Orange County, Bakersfield, Tulare, and Riverside) and San Diego clinic locations.
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