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This article describes a 5-step model of intervention research. From lessons learned in our work, we develop an outline of core activities in designing and developing social programs. These include (a) develop problem and program theories; (b) design program materials and measures; (c) confirm and refine program components in efficacy tests; (d) test effectiveness in a variety of practice settings; and (e) disseminate program findings and materials. Last, using a risk and protective factor perspective, we discuss the adaptation of interventions for new settings and populations.

This article describes a school-based study designed to promote social competence and reduce aggressive behavior by strengthening children's skills in processing social information and regulating emotions. Three successive cohorts of 3rd graders (N = 548) from 2 schools participated. In 2000-2001, children received a routine health curriculum; in 2001-2002, students received the Making Choices: Social Problem Solving Skills for Children (MC) program; and in 2002-2003, children received MC supplemented with teacher and parent activities. Compared with children in the routine condition, children in both MC conditions were rated lower on posttest social and overt aggression and higher on social competence. Moreover, they scored significantly higher on an information-processing skills posttest. The findings suggest that prevention programs can strengthen social- emotional skills and produce changes in aggressive behavior.

Structured risk assessment instruments are increasingly used in juvenile justice systems to support judicial decision making. They help juvenile justice authorities identify youths with a higher likelihood of repeat delinquency and reduce discretion associated with disposition decision making. To be effective, these instruments should be accurate across diverse populations. This study describes the predictive validity of the North Carolina Assessment of Risk (NCAR) in a sample of 9,534 adjudicated juveniles in North Carolina. Results show the predictive validity of the NCAR to differ by gender and race/ethnicity. Closer inspection reveals that risk factors for recidivism differed according to demographic group and that brief risk assessment instruments such as the NCAR leave other risk factors unmeasured. The results support the utility of risk assessment for juvenile justice decision making and suggest strategies to improve the validity of risk assessment for all offender groups.