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Diamond, Adele – Child Development, 1985
Twenty-five infants were tested every two weeks on the AB Object Permanence Task, from the time they first reached for a hidden object until they were 12 months old. Results indicate that the AB provides an index of the ability to carry out an intention based on stored information despite a conflicting habitual tendency. (Author/RH)
Descriptors: Cognitive Processes, Error Patterns, Individual Differences, Infant Behavior
Horowitz, Frances Degan; And Others – 1971
A survey of assessment procedures of the newborn and of the infant during the first month of life was conducted; the survey indicated that there were instruments for evaluating the newborn and for evaluating the four-week-old infant, but there was no single procedure which included an evaluation of both the newborn and the four-week-old infant.…
Descriptors: Age, Behavioral Science Research, Evaluation Methods, Individual Differences
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Dunn, Judy; Kendrick, Carol – Child Development, 1981
Individual differences in the social behavior of young siblings were studied in 40 sibling pairs observed at home, when the second child was 8 months old and 14 months old. Differences between same-sex and different-sex sibling pairs were marked by the second observation. More positive social behavior characterized same-sex pairs; more negative…
Descriptors: Age Differences, Family (Sociological Unit), Foreign Countries, Individual Differences
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McCall, Robert B. – Monographs of the Society for Research in Child Development, 1974
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)
Descriptors: Age Differences, Behavioral Science Research, Cognitive Development, Developmental Psychology
Self, Patricia A.; And Others – 1976
In this study, twenty 3-day-old Caucasian neonates were observed before and during feeding in an attempt to demonstrate that individual characteristics of infants, such as alertness and social behaviors, are related to the interaction of mothers and infants during feeding situations. Ten of the infants were males, 10 were females; approximately 70…
Descriptors: Behavior Rating Scales, Individual Differences, Infant Behavior, Infants
Mascolo, Michael, F. Ed.; Griffin, Sharon, Ed. – 1998
It is difficult to make progress in the study of emotions and emotional development if the meanings assigned to central constructs vary widely across investigators. This book clarifies and synthesizes the different ways in which emotion researchers approach fundamental questions about the nature of emotion and emotional development. Theorist and…
Descriptors: Adults, Affective Behavior, Age Differences, Anger