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Peer reviewedWhite, Barbara Prudhomme; Gunnar, Megan R.; Larson, Mary C.; Donzella, Bonny; Barr, Ronald G. – Child Development, 2000
Examined behavioral/physiological responses of 2-month-olds during physical examinations. Found that colic infants cried twice as much, cried more intensely, and were more inconsolable than control infants. Heart rate, vagal tone, and cortisol measures showed no appreciable difference. At home, colic infants displayed a blunted rhythm in cortisol…
Descriptors: Comparative Analysis, Crying, Heart Rate, Infant Behavior
Peer reviewedEmory, Eugene K.; Noonan, John R. – Developmental Psychology, 1984
Classified fetuses as accelerators or decelerators based on intrapartum fetal heart rate (FHR). Explored the relationship of the classification with gestational age and neonatal behavior in clinically healthy neonates to provide an empirical basis for using FHR in the study of infant behavior. Subjects were 48 "healthy term" or…
Descriptors: Birth Weight, Comparative Analysis, Heart Rate, Infant Behavior
Peer reviewedDiPietro, Janet A.; And Others – Developmental Psychology, 1987
Assessed behavioral and physiological differences between 61 breast-fed and 39 bottle-fed neonates. Mean postpartum assessment occurred at 37 hours. Results suggest that breast-fed infants had significantly longer heart periods, elevated heart period variability, and higher vagal tone than bottle-fed infants. (Author/RWB)
Descriptors: Breastfeeding, Comparative Analysis, Heart Rate, Infant Behavior
Peer reviewedGarcia Coll, Cynthia; And Others – Child Development, 1984
Study of children aged 21 to 31 months tentatively concludes: (1)behavioral tendency to be inhibited or uninhibited with unfamiliar people or during unfamiliar events is moderately stable across time and context; and (2)moderately negative relationship exists between behavioral inhibition and heart rate variability, and positive relationship…
Descriptors: Comparative Analysis, Followup Studies, Heart Rate, Individual Differences
Peer reviewedBazhenova, Olga V.; Plonskaia, Oxana; Porges, Stephen W. – Child Development, 2001
Evaluated respiratory sinus arrhythmia (RSA) and heart period in 5-month-olds during interaction challenges. Found that during object-mediated challenge, RSA increases were uniquely related to positive engagement. During person-mediated challenge, subjects showed more complex integration of autonomic and behavioral responses such that only infants…
Descriptors: Adjustment (to Environment), Affective Behavior, Attention, Comparative Analysis
Peer reviewedField, Tiffany M.; And Others – Developmental Psychology, 1979
Descriptors: Auditory Perception, Auditory Stimuli, Comparative Analysis, Heart Rate
Peer reviewedBrown, Josephine V.; Bakeman, Roger; Coles, Claire D.; Sexson, William R.; Demi, Alice S. – Developmental Psychology, 1998
Examined effects of prenatal drug exposure on infants born preterm and full-term to African American mothers. Found more extreme fetal growth deficits in later-born infants, and more extreme irritability increases in earlier-born infants. Gestation length did not moderate cardiorespiratory reactivity effects. Exposure effects occurred for…
Descriptors: Alcoholism, Birth Weight, Blacks, Body Height
