These are only some of the studies conducted on gangs and delinquent behavior. Please check the journal indexes, books and newpaper articles for other studies.
Breaking through Barriers - a comprehensive report by the Welfare Council of Metropolitan Chicago on the 1955-1960 Hard-to-Reach Youth
Chicago Area Project (CAP)- created in the 1930s by the sociologist Clifford R. Shaw to address the problems of juvenile delinquency in some of the poorest communities -
Encyclopedia of Chicago, Chicago Area Project (CAP)
Kobrin, Solomon. “The Chicago Area Project—A 25-Year Assessment.” Annals of the American Academy of Political and Social Sciences 322 (March 1959): 19–29.
Schlossman, Steven L., and Michael Sedlak. “The Chicago Area Project Revisited.” Crime and Delinquency, 29 ( July 1983): 398–462.
Detached Workers Program - Chicago Youth Development Project - a research study of the “detached workers” program established by the Young Men's Christian Association (YMCA) in Chicago and the Department of Sociology, University of Chicago. See the Encyclopedia of Juvenile Justice under James Franklin Short, Jr. (1924–)
Curry, G. David, and Irving A. Spergel.( 1992). "Gang Involvement and Delinquency among Hispanic and African American Adolescent Males" Journal of Research in Crime and Delinquency August 1992 vol. 29 no. 3 273-291 - application of Rasch modeling to survey responses and official records of 139 Hispanic and 300 African-American males in the sixth through eighth grades at four Chicago inner-city schools is used to construct incremental measures of gang involvement and delinquency. Scale sequence and regression analysis suggest that different social processes operate in gang involvement for the two ethnic populations. In both sets of cross-sectional data, the fitting of linear structural models shows gang involvement to be an effective post hoc estimator of delinquency for these youth, whereas delinquency is not an effective estimator of gang involvement.
Thrasher, Frederic. The Gang: A Study of 1,313 Gangs in Chicago. 1927- a classic sociological study of 1,313 gangs with approximately 25,000 members