2. unoffical measures of delinquency

8,158 views

Published on

CJCJ's Executive Director Daniel Macallair, is a practitioner-in-residence at San Francisco State University (SFSU)'s Department of Criminal Justice Studies. These slides are from his Juvenile Justice course materials.

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
8,158
On SlideShare
0
From Embeds
0
Number of Embeds
7,313
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

2. unoffical measures of delinquency

  1. 1. Measures of Juvenile Crime Sorting myth from fact 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  2. 2. Measuring Delinquency Through Cohort Studies A cohort study examines a selected group of individuals, born at the same time and living in the same place, over a long period of time 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  3. 3. Longitudinal cohort studies examine the following:• Age the delinquent career begins – onset• Duration of the delinquent career• Termination of delinquent care (desistance, aging out)• Extent of delinquency within a population• Gender difference in delinquent patterns 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  4. 4. Philadelphia Cohort Study conducted by Marvin Wolfgang and associatesTwo Birth Cohorts:• First Cohort consisted of all males born in Philadelphia in 1945 and who lived there from age 10 to 18 (10,000 subjects)• Second Cohort consisted of all males and females born in Philadelphia in 1958 and who lived there from age 10- 18 (included 30,000 subjects) 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  5. 5. MethodologyRelied on official arrest statistics(measure of official delinquency) 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  6. 6. PHILADELPHIA COHORT FINDINGS COHORT I (1945)• 35% HAD AT LEAST ONE CONTACT WITH THE POLICE AS JUVENILES• APPROXIMATLY 6% ACCOUNTED FOR 51% OF ALL RECORDED DELINQUENT ACTS• CHRONIC OFFENDERS (5 OR MORE CONTACTS WITH POLICE) ACCOUNTED FOR 71% OF HOMICIDES, 73% OF RAPES, 82% OF ROBBERIES, AND 69% OF AGGRAVATED ASSAULTS 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  7. 7. PHILADELPHIA COHORT FINDINGS COHORT I (1945) continued• Involvement With The Juvenile Court Had An Escalating Effect On Delinquent Behavior• Youths Progressed From Less Serious To More Serious Delinquency• Later Cohort Was More Likely To Have Committed More Violent Offenses And To Have More Repeat Offenses For Index Crimes 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  8. 8. Philadelphia Cohort Study Cohort II (1958)• 33% of young males had at least one juvenile arrest• 14% of young females had at least one juvenile arrest• Chronic offenders constituted 7.5% of the male and female population• Cohort II had more recorded acts of violence that cohort I 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  9. 9. Recent Cohort studies• Pittsburgh• Rochester• Denver• Orange County 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  10. 10. Self Report StudiesCompiles information from people about crimes they have committed 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  11. 11. Self Report Studies• First published studies appeared in the 1930s and 40s• Show that delinquency occurs within all social classes• Nearly 90% of respondents admit committing a delinquent act within the past 3 years• Race and class differences occur in regard to serious and consistent delinquency 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013
  12. 12. KEY TERMS• Uniform Crime Report • Cohort Studies• Part I Offenses • Aging out• Part II Offense • Desistance• Disaggregated • Age of Onset• Self Report Studies • Chronic offender• National Crime • Chronic recidivists Victimization studies • Early Onset• Status offender• Delinquent offender 40 Boardman Place www.cjcj.org San Francisco, CA 94103 © Center on Juvenile and Criminal Justice 2013

×