Forty low-risk mother-infant pairs were randomly assigned to one of four experimental groups. Twenty primiparous breast-feeding women and their newborn infants (Groups I and II) were observed (pretested) during a feeding episode on the second postpartum hospital day. Before discharge on the third postpartum day, 10 pretested mothers (Group I) and 10 unpretested mothers (Group III) were given a behavioral orientation to their own infant's behavior. Group IV mothers and infants were added as a control. The 40 mother—infant pairs were observed at home during a feeding episode 2 weeks postpartum, using the Nursing Child Assessment Feeding Scales to determine each mother's adaptive behavior. The data demonstrated that the effects of teaching mothers about their newborn's individual behavior makes a positive difference in the mother's overall adaptive behavior, including their sensitivity to cues, response to distress, and provision of growth-fostering situations.