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RATINGS
The demonstrated effectiveness rating is based on two criteria: 1) the quality of design and 2) the scientific evidence suggesting a deterrent effect. The brief description of the rating is provided below.
Exemplary
These programs have been scientifically demonstrated to prevent delinquency or reduce/enhance risk/protective factors for delinquency in specific social contexts using an evaluation of the highest quality (i.e., an experimental design with a randomized sample).
Effective
These programs have been scientifically demonstrated to prevent delinquency or reduce/enhance risk/protection for delinquency in specific social contexts using either an experimental or quasi-experimental design). The evidence suggests program effectiveness but the evidence is not as strong as the exemplary programs.
Promising
These programs display a strong theoretical base and have been demonstrated to prevent delinquency or reduce/enhance risk/protective for delinquency in specific social contexts using limited research and/or non-experimental designs. The evidence associated with these programs appears promising but requires confirmation using scientific techniques.