Although vocalization and mouthing are behaviors frequently performed by infants, little is known about the characteristics of vocalizations that occur with objects, hands, or fingers in infants' mouths. The purpose of this research was to investigate characteristics of vocalizations associated with mouthing in 6 to 9-month-old infants during play…

Based on doctoral dissertation, Brown University (1966), and supported by grants GB-4151 and GB-724 from the National Science Foundation.

The purpose of this research was to assess the infant's abilities to make successive discriminations in the size of a figure. The subjects were 90 10-month-old infants. (Author/MP)

This study tested the effects of moderately intense square-wave tone on the nutritive sucking pattern of neonates. (Author/SB)

Results suggest that temporal summation of brief stimuli is deficient in neonates. When compared with adult data from an analogous study, results also suggest that the transient system is immature in infants and that this immaturity is expressed in different ways by startle amplitude, probability, and latency. (PCB)

Results obtained from 27 infants ranging in age from 10 to 12 weeks indicated that infants develop expectancies regarding how stimuli occurring in particular contexts should behave based on their prior experiences with these stimuli. (Author/RH)

In contrast with controls and newborn presented with static models, only newborn presented with dynamic models reproduced the models' actions at significant levels. Infants in the static condition fixated the experimenter longer than those in the dynamic one. Results are discussed in terms of neurophysiological findings concerning the control of…

Two experiments investigated the ability of 3-month-olds to acquire generalized expectancies of reward and the role of these expectancies in memory retrieval. In both experiments, infants exhibited positive transfer over invariant and variable stimulus series; however, in the second experiment, violations of either expected order produced a…

Two experiments examined changes in the search of infants aged six, seven, and eight months. Experiment 1 found that the majority of infants displayed transitional search before intentional search. Experiment 2 showed that the infants' awareness of a hidden object develops gradually. (Author/RH)

Revised version of paper read at the American Psychological Association meetings at Miami Beach in September, 1970. Presented at a symposium on The Meaning of Smiling and Vocalizing in Infancy.'' (CB)

The research reported here is based on a thesis submitted by the author to Yale University in partial fulfillment of requirements for the Ph.D. degree. (MH)

For infants from 3 to 6 months old, novel stimuli commanded significantly more attention than familiar stimuli on both immediate and delayed tests of stimulus recognition. (MH)

Investigates infant behavior with respect to the development of object permanance. Nine-month-old infants were presented with a problem in which they saw an object hidden in one of two places but were prevented from searching for it until after the spatial relationship between infant and object was changed in some way. (Author/SS)

A series of experiments demonstrated that sharing was a characteristic activity of children 18 months of age and younger. (SB)

Preterm and term infants were given a sucrose solution, a glucose solution, or water during a test period in which the amount of their crying was measured. Sucrose reduced crying in preterm and term infants by 91% and 93%, respectively, and glucose by 86% and 81%, respectively. Water was ineffective in reducing crying in both preterm and term…