Studied individual differences in reactivity in 40 newborns. Measures of reactivity were related during the first two months of extrauterine life. (RJC)

This paper presents a pilot study designed to suggest an experiential interpretation of the development of extreme activity levels in infants (specifically, hyperactivity) and to demonstrate that general activity in infants may be influenced by the reinforcement contingencies established by mothers. Subjects were three 13-week-old infants. Operant…

The study was designed to investigate the exploration and attachment behavior of young children in a strange situation in the presence of: (1) an individual to whom the child was attached (the mother); (2) an inanimate object with which the child was highly familiar (favorite toy); and (3) a novel inanimate object (an unfamiliar toy). The effect…

Based upon a paper presented at the American Psychological Association, Miami Beach, 1970. (Editor)

A way of thinking about the child's stimulus effects is advanced and applied to parent-child interactions observed in home settings. (Author/WY)

"The conditionability of the eyeblink response using a photocell method with human infants was explored... The data indicate the feasibility of studying such conditioning in young infants. (Author)

An earlier version of this paper was presented at the annual meeting of the American Psychological Association at San Francisco, September 1968, in a symposium, "Attachment Behavior in Humans and Animals." (DR)

Twenty-five one-year-olds were administered two tasks (each of which consisted of a familiarization stage followed by a recognition stage) in order to determine whether infants can recognize the shapes of objects by touch alone. (CM)

The infants of the adolescent mothers were found to be significantly less capable of responding to social stimuli, to be less alert, and to be less able to control motor behavior and to perform integrated motor activities than were the infants of older mothers. Journal availability: J. B. Lippincott Co., E. Washington Sq., Philadelphia, PA 19105.…

How infants come to master reaching for moving objects was studied in a situation where the distance to and the velocity of the moving object varied. Eleven infants participated in the study. (MP)

Four facial stimuli derived from the Bolton standards of craniofacial development representing a human male at 6 months, 3, 8, and 18 years of age were used in a test of Lorenz's concept of babyishness and of the discrepancy hypothesis. Subjects were 87 four-month-old infants. (Author/MP)

Reports that, even though young infants can discriminate among different facial expressions, there are individual differences in infants' expressivity and ability to produce and discriminate facial expressions. (PCB)