Samenvatting

Juvenile delinquents appear to be delayed in their moral development, more specific the development of their moral judgment, empathy, guilt and shame. Moral development also appears to predict recidivism. It is therefore plausible that interventions that focus on the moral development of juvenile delinquents could have a beneficial effect on reducing recidivism. However, our systematic review (i.e., meta-analysis) shows that with these so-called moral behavioral interventions the level of moral judgment of juvenile offenders can be significantly increased, by 22%, but that such interventions have no effect on recidivism. It may be possible to increase the effectiveness of moral interventions for juvenile delinquents by simultaneously influencing several aspects of moral development instead of, for example, only moral judgment or empathy. In addition, problems of poor aggression regulation, often caused by a history of traumatic events, may need to be addressed first before moral-behavioral interventions can be effective.