Five experiments using identical reflex modification procedures on neonates and adults suggest developmental differences in processing auditory stimuli. Neonates failed to exhibit reflex inhibition by either prior acoustic or tactile stimuli. Adults exhibited robust reflex inhibition to these same stimuli. Developmental processes implied by these…

Similarities and differences between two cry clinics in Canada and New Zealand are offered, an example of a typical first session is provided, and some current issues are raised. (Author/KS)

When not socially engaged, children showed a significantly greater percentage of reoriented attention during vocalizing than nonvocalizing periods. Findings confirm the existence of an attention/vocalization relation and are consonant with Greenfield's predictions about the nature of this relation. The relation held equally for prelinguistic and…

Investigates psychophysiological reactions of 60 women to an infant's cry and to a control sound. The 30-second pain cry evoked greater cardiac and electrodermal activity than did the control stimulus, although selected groups varied in the nature and extent of their reactions. Both maternal state and experience with infants affected reactions.…

Results of two experiments indicate that dimensions of the social situation in which social behaviors are modeled influence eight-month-old children's tendency to imitate and their choice of recipients for their imitation. (Author/RH)

Three groups of macaque mother/infant dyads were observed while each lived in ecological settings that differed in level of foraging demand and, hence, the amount of work each mother was required to perform to obtain her daily rations. Findings suggest that in monkeys, as in humans, when mothers are psychologically unavailable to their infants,…

This study concerns the onset and early development of wariness in human infants. The data suggest positing a hierarchy of aversive reactions, from distress reactions to acquired fears. (Author/GB)

Purpose of this experiemnt was to systematically investigate the behavioral effects of vertical rocking at different frequencies up to 1.5 Hz. (Authors/CB)

Data is from a short-term longitudinal study conducted at the Institute of Human Development which involved presenting two weeks of a special contingency experience to infants between their eighth and tenth weeks. (Authors/MB)

Caretaker-infant interaction within the first year of life was studied in a group of 10 Wolof infants. The pattern of caretaker-infant interaction was more strongly related to age of infant than any other variable investigated. The often-found result that African infants show precocious development within the first year was confirmed for the…

A series of investigations were conducted to determine whether reflexive crying occurs in newborns and to define the parameters that control his behavior. (NH)

Summarizes research projects on infant behavior conducted during the 1960's and includes an extensive list of references. (AJ)