skip navigation


Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.


NCJ Number: 134678 Find in a Library
Title: Delinquency and Age-at-offense (From Delinquency Careers in Two Birth Cohorts, P 213-244, 1990, by Paul E Tracy, Marvin E. Wolfgang, et al., -- See NCJ-134672)
Author(s): P E Tracy; M E Wolfgang; R M Figlio
Date Published: 1990
Page Count: 32
Sponsoring Agency: Plenum Press
New York, NY 10013
Sale Source: Plenum Press
233 Spring Street
New York, NY 10013
United States of America
Type: Survey
Language: English
Country: United States of America
Annotation: Data from 9,945 males born in Philadelphia in 1945 and 13,160 males born in Philadelphia in 1958 provided information about the ages at which offenses were committed and showed a close similarity between the two cohorts.
Abstract: Except for age 10 and under, the proportion of offenses increased with age up to 16 and then declined at age 17. The peak age at which offenses were committed was 16 for both cohorts. In addition, 60 percent of the offenses for the 1945 cohort and 64 percent of the offenses for the 1958 cohort were committed by youths of ages 15, 16, and 17. When race was considered, these patterns held for the earlier cohort but changed for the 1958 cohort in that whites committed 66 percent and nonwhites 55 percent of their offenses in the last 3 years at risk. Nonindex offenses predominated at all ages, especially late in the juvenile career. However, the two cohorts differed in that only crimes of violence showed consistent increases through age 16 in the 1945 cohort, while a clear age effect was evident for all the serious index offenses (violence, robbery, and property) for the 1958 cohort. Finally, delinquents in the later cohort were still active beyond the age when the offenders in the earlier cohort had peaked, with whites in the second cohort active longer than nonwhites. Tables and figures
Main Term(s): Age group comparisons; Juvenile crime patterns
Index Term(s): Juvenile Delinquency seriousness scales; Male juvenile delinquents; Pennsylvania
To cite this abstract, use the following link:

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.