This is a report of an examination of gender differences in behavior problems and a prediction of their changes from 2.5 to 3.5 years from mothering qualities among 209 low-income Hispanic children. Externalizing behaviors declined over this time somewhat more for girls than for boys. Fewer externalizing behavior problems at age 3.5 were correlated with more supportive and less intrusive mothering at 2.5, but only for boys, and increases in externalizing behavior among boys were uniquely predicted by greater maternal intrusiveness. Implications for understanding parental control factors among Hispanic families are discussed.