Norms and recidivism rates for the MMPI and selected experimental scales on a Canadian delinquent sample.

Abstract
Norms and recidivism rates on the MMPI [Minnesota Multiphasic Personality Inventory] and selected experimental scales were given for a sample of young English-speaking human offenders in the province of Ontario. Data confirmed a need for updating the MMPI and selected experimental scale norms on correctional samples. Specific changes in delinquents'' MMPI norms were noted and compared to norms gathered on psychiatric samples in Ontario. The adequacy of psychological tests, in particular the MMPI and the selected experimental scales, in predicting recidivism was discussed. At best, the scales in the present study were mediocre predictors of recidivism and the MMPI fared relatively poorly in comparison to some of the selected experimental scales.

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