Two experiments were conducted to identify the conditions likely to produce resurgence among adult human participants. The preparation was a simulated caregiving context, wherein a recorded infant cry sounded and was terminated contingent upon targeted caregiving responses. Results of Experiment 1 demonstrated resurgence with human participants in…

This paper describes the initial organization of the infant's reaction to having his vision occluded by an opaque cloth; traces the development of this reaction over the first six months; and probes the role the occlusion of vision plays in provoking the reaction. Fifty videotaped sessions of infants during two conditions - eyes covered with an…

A replication of a previous longitudinal study of American children -- this time with Guatamalan children. (RY)

These studies focused on sex differences and were designed to test the hypothesis that girls were more likely to be immobilized by a fear stimulus than boys. (Authors/CB)

Evaluates the extent to which mutual regulation occurs in mother-infant interactions by assessing the relationship of their affective and attentional involvement. (MH)

Results demonstrate that 12 - 15 - week-old male infants smile to nonsocial stimuli, and offers support for the recognition hypothesis of infant smiling. (Authors/MB)

Results suggest that the human infant's response to visual stimulation undergoes change during the neonatal period. (Authors)

Findings indicate that infant boys may be more easily conditioned by visual reinforcement than are girls. (Author/MB)

Infant reaction to adult speech was studied through frame-by-frame analysis of sound films. Infants' actions were found to be synchronized with the organized speech behavior of the adults in his environment. (ST)