The behavior of 10 newborn babies given pacifiers in response to spontaneous empty sucking, rooting, and mouthing was compared to that of 10 controls. Observations, conducted at 24-hour intervals for four days, began 2 hours before and concluded 1 hour after feedings. (RH)

Infants 9 to 10 months of age were presented with a series of visible displacement hiding trials at two locations. Infants had to choose among three, five, or six alternative locations on each trial. Search attempts tended to cluster around the currently correct location during both trials on all apparati, providing evidence for a memory…

The Brazelton Neonatal Behavioral Assessment Scale was administered to 54 full-term, healthy infants on days 1 through 5 and on days 7 and 10. Infants were divided into eight groups, differing in terms of the obstetrical medication mothers received. Low dosages of obstetrical medication were found to have significant but subtle effects on the…

The development of intention to communicate among infants is discussed. In addition, the construct of intention is examined and a model describing the development of intention is proposed. The model is used to describe both the development of intentional behavior and communication as an intentional behavior. (Author/RH)

Three experiments investigated seven-month-old infants' ability to discriminate the facial expressions of happiness and fear. (CM)

Four-month-old infants' stimulus preferences were assessed using an operant paradigm with mobile reinforcers of different colors (blue, green). (Author/MP)

Investigates whether five-week-old infants' attention to a schematic face would increase as the velocity of its oscillating eye dots increases. Twenty-four infants served as subjects. (MP)

Five-month-old infants were habituated to three types of visually presented rigid motion, with duration of fixation as the dependent measure. After reaching a criterion of habituation, a fourth rigid motion (not habituated) and a deformation were presented. (Author/SS)

The early phase of imitation was studied in children between 6 and 18 months by means of the presentation of 22 actions. (SB)

Examined whether early differences in stress reactivity were related to self-recognition at 18 months. Found that self-recognition was related to greater cortisol response and less rapid quieting at 6 to 18 months, whereas cortisol and quieting responses of 2- to 4-month-olds did not differentiate self-recognizers and non-self-recognizers,…

Examined visual fixation in 3- to 6-month olds for fit to attentional inertia theory. Found that look duration toward extended audiovisual stimuli had a lognormal distribution. The conditional probability of looking away decreased when look duration increased. Heart rate deceleration accompanied look onset and stimulus changes occurring within…