Descriptor
| Individual Differences | 3 |
| Infant Behavior | 3 |
| Infants | 3 |
| Sleep | 3 |
| Age Differences | 2 |
| Arousal Patterns | 1 |
| Birth Weight | 1 |
| Crying | 1 |
| Developmental Stages | 1 |
| Eating Habits | 1 |
| Individual Development | 1 |
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Source
| Child Development | 3 |
Author
| Birns, Beverly | 1 |
| Ingersoll, Evan W. | 1 |
| Plewis, Ian | 1 |
| Schmidt, Katalin | 1 |
| St James-Roberts, Ian | 1 |
| Thoman, Evelyn B. | 1 |
Publication Type
| Journal Articles | 2 |
| Reports - Research | 2 |
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Peer reviewedSchmidt, Katalin; Birns, Beverly – Child Development, 1971
Descriptors: Arousal Patterns, Individual Differences, Infant Behavior, Infants
Peer reviewedSt James-Roberts, Ian; Plewis, Ian – Child Development, 1996
Used multilevel analyses to examined the amounts of time infants spent asleep, awake, content, feeding, fussing, and crying at 2, 6, 12, and 40 weeks of age. Found that day-to-day fluctuations accounted for between 44 and 53% of the variance in amounts of time sleeping, fussing, and crying. (MDM)
Descriptors: Age Differences, Crying, Developmental Stages, Eating Habits
Peer reviewedIngersoll, Evan W.; Thoman, Evelyn B. – Child Development, 1999
Used time-lapse video to record sleep/wake states of preterm infants for three 24-hour periods at 33 and 35 weeks conceptional age. Found that very-low-birthweight preterm infants showed marked stability and developmental change in the organization of sleep/wake states from a very early age, and their states were related to demographic variables…
Descriptors: Age Differences, Birth Weight, Individual Development, Individual Differences
