To document movement patterns and to examine developmental interrelationships, the ontogeny of rooting, lip, lateral tongue, mouth opening, biting, and Babkin reflexes and the development of emerging chewing behaviors were observed in two normal infants over a period from 1 week to 35 weeks of age. (Author/RH)

Examines the extent to which an infant's social initiative resists or is modified by three variations in the behavior of adult responsiveness: repeated responses, varied responses, and eye aversion. (HOD)

Reviews the major transitional object (TO) theories in terms of origin, development, and psychological meaning. Examines the validity of TO (intense, persistent attachments young children develop for blankets, soft toys, and bits of cloth) theory in light of current empirical knowledge of TO behavior. (HOD)

Adopts a longitudinal design to track mother-child developmental change in infant task-related mastery and concomitant maternal behavior. Finds that, as infants gain more mastery across time, mothers gradually withdraw support in terms of concrete, specific and nonverbal means of instruction. Results support a one-step-ahead model for maternal…

Four studies involving 40 pigtail monkeys are described in which relatively short separation experiences in infancy were associated with evidence of persistent changes in social behavioral function (less sociability, fewer close friends) and immunological function (suppression of lymphocyte proliferation) up to 6 years later. (Author/JDD)