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Peer reviewedGoldsmith, H. H.; Lemery, Kathryn S.; Buss, Kristin A.; Campos, Joseph J. – Developmental Psychology, 1999
Explored genetic and environmental underpinnings of temperamental differences in 3- to 16-month-old twins and their parents. Found that additive genetic and shared environmental effects best represented smiling, laughter, and duration of orienting. Shared environmental effects fully accounted for co-twin similarity for soothability. Additive…
Descriptors: Genetics, Individual Differences, Infant Behavior, Infants
Peer reviewedSmith, P. Hull; And Others – Merrill-Palmer Quarterly, 1997
Examined predictive validity of measures of infant habituation and later aspects of temperament. Found babies who habituated sooner (fewer trials to criterion) at five months of age and had fewer peak fixations during habituation were rated by mothers as more active, intense, and negative in mood, and less persistent and adaptable. Age differences…
Descriptors: Age Differences, Habituation, Infant Behavior, Infants
