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Peer reviewedIzard, Carroll E.; And Others – Developmental Psychology, 1991
Examined cardiac activity during the first 13 months of life. Indexes of cardiac activity changed in an orderly way with development. There were intercorrelations among the cardiac measures. Analyses indicated that measures of heart-rate variability were significantly higher in insecure children than in secure children. (BC)
Descriptors: Attachment Behavior, Child Development, Heart Rate, Infant Behavior
