The MPG evidence ratings are based on the evaluation literature of specific prevention and intervention programs. The overall rating is derived from four summary dimensions of program effectiveness:
The effectiveness dimensions as well as the overall scores are used to classify programs into three categories that are designed to provide the user with a summary knowledge base of the research supporting a particular program. A brief description of the rating criteria is provided below.
In general, when implemented with a high degree of fidelity these programs demonstrate robust empirical findings using a reputable conceptual framework and an evaluation design of the highest quality (experimental).
In general, when implemented with sufficient fidelity these programs demonstrate adequate empirical findings using a sound conceptual framework and an evaluation design of the high quality (quasi-experimental).
In general, when implemented with minimal fidelity these programs demonstrate promising (perhaps inconsistent) empirical findings using a reasonable conceptual framework and a limited evaluation design that requires causal confirmation using more appropriate experimental techniques.
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