The production and comprehension of pointing and their developmental relationship in the young child was examined in a study of 36 male and female 9- to 14-month-old infants. (CM)

The major objective of this series of studies was to clarify the concept of mastery motivation and to develop measures of this concept applicable to 1-year-old children. Three studies were made with 44 infants, aged 12 to 13 months. The first study, "Aspects of Mastery Motivation and Cognitive Functioning," utilized structured situations…

This study examines the effects of sex, socioeconomic status, birth order and birth spacing on the cognitive performance of 12-week-old infants. A brief review of research on neonatal cognitive ability is followed by a description of the study itself. The subjects, 189 three-month-old Caucasian infants (61 first borns, 58 second borns, and 49…

A project to determine how children and members of their social environment regulate the stimulation they receive from each other is presented. The general procedure employed was the descriptive and experimental analysis of the behavior of subjects in social interaction situations, as recorded on videotape. Types of dyads videotaped include…

Tests of conditionability in infants were used in a longidudinal study of 32 subjects in the first year of life. The research was based on Eysenck's hypothesis that conditionability i s a unitary factor related to introversion-extroversion and attention span. The objective of the investigators was to devise a battery of conditioning tasks…