Cohort Profile: the Cambridge-Somerville Youth Study (CSYS)

Founded in 1935, the Cambridge-Somerville Youth Study (CSYS) is a randomized controlled experiment of a delinquency prevention intervention, with an embedded prospective longitudinal survey, involving 506 underprivileged boys, ages 5 to 13 years (median = 10.5 years), from Cambridge and Somerville,...

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Bibliographic Details
Authors: Welsh, Brandon 1969- (Author) ; Zane, Steven N. (Author) ; Yohros, Alexis (Author) ; Paterson, Heather (Author)
Format: Electronic Article
Language:English
Published: 2023
In: Journal of developmental and life-course criminology
Year: 2023, Volume: 9, Issue: 1, Pages: 149-168
Online Access: Volltext (lizenzpflichtig)
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Summary:Founded in 1935, the Cambridge-Somerville Youth Study (CSYS) is a randomized controlled experiment of a delinquency prevention intervention, with an embedded prospective longitudinal survey, involving 506 underprivileged boys, ages 5 to 13 years (median = 10.5 years), from Cambridge and Somerville, Massachusetts. The CSYS has two main objectives: to evaluate the effects of the delinquency prevention program and to investigate the development of delinquency and criminal offending over the life-course. It has been the subject of four follow-ups, with each carried out at key stages of the participants’ life-course and spanning more than 70 years: transition from adolescence to adulthood (in 1948); early adulthood (in 1956); middle age (1975–1979); and old age (2016 to present). As of the latest follow-up, 18 participants (3.6%) are missing. Data collection has been detailed and extensive, including records on the boys prior to intervention; case histories of the treatment group boys and their families during intervention; questionnaires and interviews of participants in middle age; records of delinquency, offending, and other life-course outcomes through middle age; and records of mortality through old age. The CSYS has advanced knowledge on risk factors for offending, with a particular focus on family, the complex interaction of these risk factors, the relationship between offending and mortality over the full-life course, the potential for social interventions to cause harm, and the role of deviancy training in group-directed programs. In addition, it has reinforced the need—for science and policy—for long-term follow-ups of developmental crime prevention programs.
ISSN:2199-465X
DOI:10.1007/s40865-022-00210-1