 Botvin at al, 2003, Eisen at al., 2002, and Grossman et al., 1997).Prevention scientists understand that the final task arising from these research findings is the application of proven prevention programs, policies and strategies in the real world in order to enhance youth development on the ground in communities.In collaboration with communities and state and federal governments, researchers are studying the impact that prevention science can have on the effectiveness of prevention efforts within those systems.