In an attempt to explore how familial criminality and familial drug and alcohol use affected children’s decisions to use drugs and alcohol, join gangs, and/or get involved in delinquent behavior, this study used a quasi-experimental design and self-report methodology to examine the relationship between parental criminality and children’s criminality. Data were gathered from families residing in at-risk areas and that contained all the characteristics known to reduce the quality of life and increase a child’s probability of getting involved in gang and delinquent activities. Earlier research indicated that family was one of the significant factors affecting children’s behavior. The analyses of this study indicated three major conclusions: (1) parental criminality and drug use enhances gang membership; (2) parental criminality and drug use enhanced gang membership and drug use; and (3) parental criminality and drug use enhanced gang membership, drug use, and delinquency. These conclusions indicate that family criminality significantly enhanced the probability of youth getting involved in criminal and gang activities. Recommendations were made to implement programs focused on youth and families. It was also noted that parent participation in an intervention and prevention program was essential. References