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Kagan, Jerome; And Others – Child Development, 1984
A group of 43 children classified as either behaviorally inhibited or uninhibited at 21 months were observed at four years of age in situations designed to evaluate behavior with an unfamiliar peer, heart rate and heart rate variability to cognitively challenging tasks, reluctance to answer difficult questions, and differential fixation of an…
Descriptors: Behavior, Biological Influences, Comparative Analysis, Heart Rate