Age-Graded Theory identifies turning points like marriage and career that can cause delinquents to stop criminal behavior. Factors like low SES, family issues, and individual traits contribute to delinquency. However, getting married to a supportive spouse or finding a job willing to give someone a chance can be turning points that lead to less crime through desistance. Warning signs in school, work, and family structure help probation officers determine risk, while teacher support, involvement, and positive relationships can help prevent delinquency.