National Institute of Justice National Institute of Justice. Research. Development. Evaluation. Office of Justice Programs
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Evidence Rating
Refers to one of three designations on indicating the extent of the evidence that a program works. The three designations are: "Effective" (Effective icon), "Promising" (Promising icon), and "No Effects" (Ineffective image). A single study icon is used to identify programs that have been evaluated with only one study. A multiple studies icon (Multiple studies icon image) is used to represent a greater extent of evidence supporting the evidence rating. The icon depicts programs that have more than one study in the evidence base demonstrating effects in a consistent direction. For practices, the rating designations take a slightly different meaning. Read more About or about Program Review and Rating from Start to Finish or about Practice Review and Rating from Start to Finish.