others have shown positive effects overall but reduced benefits for groups with multiple risk factors.

Several interventions highlighted in this chapter have been tested in two or more randomized controlled trials and in evaluations by researchers other than the developers of the interventions. Evidence has been found for long-term results with different populations. Many other promising interventions have not yet been subjected to this level of testing.

Given the convergence of evidence related to the positive effects of interventions aimed at improving family functioning and family support, the committee concludes that this area warrants both concerted dissemination and continued research. Some factors, such as poverty, that have notable effects on multiple disorders but have not been subjected to much empirical research merit rigorous evaluation.

Similarly, the evidence of positive effects from school-based interventions points to the considerable potential—with the support of continued evaluation and implementation research in collaboration with educators—of prevention practices in schools aimed at increasing the resilience of children and reducing the risk for MEB disorders. Also promising are interventions at the level of communities, including local community interventions, as well as mass media and Internet interventions, and approaches targeting policies, which warrant continued and rigorous research.