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| Age Differences | 1 |
| Heart Rate | 1 |
| Infant Behavior | 1 |
| Infants | 1 |
| Neonates | 1 |
| Personality | 1 |
| Predictor Variables | 1 |
| Stress Variables | 1 |
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| Child Development | 1 |
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| Gunnar, Megan R. | 1 |
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| Rothbart Infant Behavior… | 1 |
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Peer reviewedGunnar, Megan R.; And Others – Child Development, 1995
Baseline and heelstick measures of behavioral state, heart period, vagal tone, and salivary cortisol were obtained from 50 full-term newborns. Mothers completed Rothbart's Infant Behavior Questionnaire when the infants reached six months of age. Greater reactivity to the heelstick was associated with lower scores on the…
Descriptors: Age Differences, Heart Rate, Infant Behavior, Infants
