In this paper, we develop and test hypotheses on how authoritative parenting and collective efficacy combine to increase a child's risk of affiliating with deviant peers and engaging in delinquent behavior. Analyses using two waves of data from a sample of several hundred African American caregivers and their children largely supported the predictions. Over time, increases in collective efficacy within a community were associated with increases in authoritative parenting. Further, both authoritative parenting and collective efficacy served to deter affiliation with deviant peers and involvement in delinquent behavior. Finally, there was evidence of an amplification process whereby the deterrent effect of authoritative parenting on affiliation with deviant peers and delinquency was enhanced when it was administered within a community with high collective efficacy.