Eyeblink conditioning is a well-established model for studying the developmental neurobiology of associative learning and memory. However, age differences in extinction and subsequent reacquisition have yet to be studied using this model. The present study examined extinction and reacquisition of eyeblink conditioning in developing rats. 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)

Major Purpose of the study was to investigate the extent to which aggressive retaliation in boys at three age levels is influenced by two dimensions of hypothetical provocation: accidental versus intentional and verbal versus physical. (Authors/CB)

Recent theoretical analyses have implied that there may be age differences in children's tendency to exercise component selection, i.e., to attend selectively to a single component of stimulus objects in a learning situation. In the present study, 6 experiments were conducted, each designed to investigate developmental changes in component…

The development of the concept of seriation was studied for 415 children, ranging in age from 3 to 9 years. The subjects were required to learn to identify the larger or smaller object in a two stimulus series, the smallest or middle-sized object in a three stimulus series, and the largest or next to the smallest in a four stimulus series. The end…

Younger men are both less engaged from the world and more efficient processors of information than older (especially less educated) ones. (Authors)

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

It was concluded that previous explanations of visual exploration or stimulus preference have been oversimplified, and studies on the whole have failed to take into account a crucial interaction between sex and age variables. (Authors)

Reports a series of studies conducted to investigate possible differences in the exploratory manipulation and play behavior of human infants 7-1/2- 11-1/2 months of age as a function of the attributes of the stimulus, the familiarity of the subject with the stimuli, the age and sex of the infants, and individual differences. (Author/CS)

This document describes the research activities of the Syracuse University Evaluation and Research Center for the year September 1, 1966 through August 31, 1967. This final report is organized on the basis of six research projects, which have been abstracted under the following titles and numbers: (1) Experiments in Grammatical Processing in…