Of a group of 67 low-income first-time fathers-to-be, half were randomly assigned during the second trimester of pregnancy to participate in an intervention program designed to acquaint them with information, insights, and clinically appropriate techniques of responsive care for infants. Fathers were videotaped in feeding interactions with infants at hospital discharge and at 1 month of age. During two 1.5 hour training sessions, the Information and Insights about Infants (III) program attempted to sensitize fathers to fetal and early infants' characteristics and behaviors; the need for early and responsive attunement to infant state and signals of distress; and ways to modulate distress. Soothing techniques were modeled with a doll. Intrauterine bonding was encouraged through specific skin contact with the pregnant partner. Difficulties in recruitment were caused by fathers' lack of commitment to partner or infant, suspicion of a project about babies, drug and alcohol abuse, illiteracy, or personality problems. At maternity clinics, pregnant women were enlisted to encourage their partners to participate. Transportation to the clinic and oral presentation of questions helped ensure father participation. Early identification of fathers, skill and persistence of the intervenor, and continuity of caring were identified as prognosticators of success in reaching fathers-to-be. (RH)