In three experiments, it was demonstrated that human newborn heart rate level can be reliably modified through classical conditioning procedures. Findings support the idea that early learning may occur under a variety of conditions and different theories may account for the results. (Author/SB)

The present investigation was designed to compare the behavior of 6- and 9-month-old infants; visual as well as manipulative responses were recorded. (Author/RK)

Results support previous research which shows that the vocal behavior of young children can be controlled by social stimuli. (Authors/CB)

As an important part of the plan to record and systematically deal with all observable behavioral events that constitute an infant's waking life, all social encounters between the baby and other persons that occurred during weekly observations of two infants in their everyday milieu were recorded. (Author/CB)

The antecedents of verbal behavior, together with the teaching skills of the adult linguistic community, probably constitute all the necessary bases for language acquisition. As they seemed to be sufficient for the explanation of all the known phenomena, an assumption of an innate linguistic language acquisition device was rejected as superfluous.…

Portions of this paper were read as part of a symposium on The Meaning of Smiling and Vocalizing in Infancy'' at the 1970 meeting of the American Psychological Association, Miami Beach, Florida, September, 1970. (Editor)

The author examines the effect of blindness on a child's acquisition of reaching, grasping, and crawling skills which are said to be necessary for coping effectively with the environment. (GW)

Studies the effects of mothers' presence and absence on two infants from birth to two years. (AJ)

Describes the reaction of infants and their attention to events by actions such as vocalizing, smiling or a change in respiration rate. Suggests that understanding of infant selectivity and duration of attention should provide insight into the nature of psychological growth. (JM)

To investigate the nature of young infants' social competence, the effect of depressed maternal expression during face-to-face interaction was examined. An experimental analogue of maternal depression was employed. Subjects were 12 female and 12 male infants, ages 96 to 110 days, and their mothers. (Author/RH)

Regardless of birthweight, ventilated infants received the lowest ratings for overall performance on the Infant Behavior Record. Ventilated newborns of very low birthweight were more likely to receive ratings characterizing an overly active infant with a short attention span, and never-ventilated infants of very low birthweight were most likely to…