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Piquero, Alex R.; Monahan, Kathryn C.; Glasheen, Cristie; Schubert, Carol A.; Mulvey, Edward P. – Crime & Delinquency, 2013
Much criminological research has used longitudinal data to assess change in offending over time. An important feature of some data sources is that they contain cross-sections of different aged individuals followed over successive time periods, thereby potentially conflating age and time. This article compares the substantive conclusions about the…
Descriptors: Crime, Longitudinal Studies, Risk, Regression (Statistics)
Gao, Jian; Hallar, Brittan; Hartmann, Tracey A. – Research For Action, 2014
This report examines the 21st Century Community Learning Center (CCLC) programs evaluated by Research for Action (RFA) and presents an aggregate analysis of key findings to inform broader discussions about OST programs. The report addresses the following questions: (1) Who participated in the 21st CCLC programs and how frequently did they…
Descriptors: After School Programs, Community Centers, Grants, Program Effectiveness
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Dariotis, Jacinda K.; Bumbarger, Brian K.; Duncan, Larissa G.; Greenberg, Mark T. – Journal of Community Psychology, 2008
Widespread replications of evidence-based prevention programs (EBPPs) prompt prevention scientists to examine program implementation adherence in real world settings. Based on Chen's model (1990), we identified five key factors of the implementation system and assessed which characteristics related to program adherence. The sample included 32…
Descriptors: Evidence, Prevention, Program Implementation, Statistical Significance