Drawing on a sample of 318 African American and 354 Latino urban, low-income families, we identify maternal monitoring knowledge trajectories and examine which trajectory predicts fewer late-adolescent externalizing problems and which family and neighborhood factors predict trajectories with positive implications for late-adolescent externalizing behaviors. The majority of adolescents in both groups perceived long-term high levels of maternal monitoring knowledge throughout adolescence-stably high for the African American sample and high for the Latino sample. Long-term high levels of knowledge predicted fewer general late-adolescent externalizing problems for both groups and fewer late-adolescent delinquent behaviors for the African American sample. Family routine and mother-adolescent trust predicted long-term high levels of knowledge for both groups. For the African American sample, family routine and neighborhood cohesion predicted stably high levels of knowledge via the mediation of mother-adolescent trust. We discuss implications for improving positive adolescent development and family environments for both groups.
Keywords: Low-income families; ethnic minority adolescents; externalizing problems; maternal monitoring knowledge.