Answer:
1. For delinquent and at-risk preadolescents: Family therapy and parent training.
2. For older male ex-offenders: Vocational training.
3. For convicted offenders: Rehabilitation programs with risk-focused treatments.
Explanation:
Here's a report for the U.S. Department of Justice's Office of Justice Programs. There are more recent reports but this should work well for your given prompt.
