Relations between mother-infant interactive behaviors and parenting-related variables were analyzed in a sample of 72 infants (35 boys and 37 girls, average age=31 mo.) and their mothers in Ulsan, Korea. Parents` views on children, parenting stress, fathers` participation in parenting and social support were measured using questionnaires and mother-infant interactive behaviors were observed using the 3-bags test. Among the parenting-related variables, parents` views on children were related significantly with mothers` emotional expressions & infant`s participation with mothers. Social support was correlated with mother`s behaviors, including positive rewards and emotional expressions. Mother-infant interactive behaviors were closely correlated with one another: Mothers` positive behaviors such as overall reactivity and cognitive stimulation were correlated positively with infants` positive behaviors, including sustained attention and positive affect. Future studies will provide us with greater insights into the mechanisms underlying the effects of these parenting-related variables on infant behavior and development.