The Lawrence W. Green Paper of the Year Award

Prevention research continues to focus on school-based substance use programs aimed at adolescents. These programs are designed to reduce substance use and risk behavior by targeting key mediators, such as normative beliefs, which in turn reduce substance use. All Stars is a newly developed program that was recently evaluated in a randomized field trial in 14 middle schools in Lexington and Louisville, Kentucky. The authors examined targeted and nontargeted variables as possible mediators of program effectiveness. Findings indicate that All Stars achieved reductions in substance use and postponed sexual activity when teachers were successful at altering targeted mediators: normative beliefs, lifestyle incongruence, and manifest commitment to not use drugs. The programwas not successful when itwas delivered by specialists. At least in part, this failure is attributable to specialists' inability to change mediators as intended by the program.

How all Stars Works: An Examination of Program Effects on Mediating Variables

Prevention research continues to focus on school-based substance use programs aimed at adolescents. These programs are designed to reduce substance use and risk behavior by targeting key mediators, such as normative beliefs, which in turn reduce substance use. All Stars is a newly developed program that was recently evaluated in a randomized field trial in 14 middle schools in Lexington and Louisville, Kentucky. The authors examined targeted and nontargeted variables as possible mediators of program effectiveness. Findings indicate that All Stars achieved reductions in substance use and postponed sexual activity when teachers were successful at altering targeted mediators: normative beliefs, lifestyle incongruence, and manifest commitment to not use drugs. The program was not successful when it was delivered by specialists. At least in part, this failure is attributable to specialists’ inability to change mediators as intended by the program.

The Friendly Schools Project: An Empirically Grounded School-based Bullying Prevention Program

There exists limited empirical evidence of the effectiveness of universal school-based interventions to reduce or prevent children's bullying. The Friendly Schools project was a 3-year longitudinal randomised control trial designed to determine the efficacy of a universal holistic intervention to prevent or reduce bullying among primary school children. The trial involved 1968 Western Australian children, their parents and their teachers. This paper discusses the components of the Friendly Schools program, and how empirical, theoretical and “promising” mechanisms of change (mediators) were operationalised to develop a whole-of-school approach to reduce bullying. This paper concludes that further research is needed to determine empirically: (a) which mechanisms of change mediate improvements in children's bullying behaviour and mental health status and (b) the relative contribution of the various components of a whole-of-school approach to bullying prevention and reduction in children.