CrimeSolutions classifies programs and practices in four levels: Effective, Promising, Ineffective, and Negative Effects based on the strength of the evaluation research that indicates an intervention achieves its goals (i.e., its justice-related outcomes).
Evidence RatingsEvidence Rating | One-Study Icon | Multiple-Study Icon | Description |
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Effective |
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| Program or practice is likely to result in the intended outcome(s). |
Promising |
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| Program or practice may result in the intended outcome(s). |
Ineffective |
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| Program or practice has strong evidence that the program did not have the intended effect. While programs and practices rated Ineffective may have some positive effects, the overall rating is based on a preponderance of the evidence |
Negative Effects |
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| Program or practice may result in negative outcomes. |
A single study icon is used to identify programs and outcomes that have been evaluated with a single sample.
A multiple studies icon is used to represent a greater extent of evidence supporting the evidence rating. The icon depicts programs that have more than one study sample in the evidence base demonstrating effects in a consistent direction.
More info on how we rate programs and how we rate practices.