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Lewis, Michael; Thomas, David – Child Development, 1990
Data provide strong evidence that studies of stress and cortisol release in infants must take into account basal level, circadian rhythm, and behavioral effects and employ appropriate statistical procedures. Participants were infants of two, four, and six months of age from whom salivary cortisol was obtained before and 15 minutes after an…
Descriptors: Age Differences, Behavior Patterns, Infants, Research Methodology
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Gunnar, Megan R.; And Others – Child Development, 1985
Determines the time course of circulating cortisol following circumcision in 80 healthy newborns and investigates whether changes in behavioral state following circumcision in anyway paralleled the adrenocortical time course. Adrenocortical and behavioral data indicated that subjects were able to cope with circumcision trauma. Cortisol levels…
Descriptors: Behavior Patterns, Comparative Analysis, Coping, Males
Peer reviewed Peer reviewed
Repetti, Rena L. – Child Development, 1996
Tested the basic hypothesis that failure experiences at school increase the likelihood of aversive parent-child interaction after school. Subjects were 254 elementary school students. Found that children who rated more academic failure events at school described parents as more disapproving after school, but this effect was only partially mediated…
Descriptors: Academic Failure, Age Differences, Behavior Patterns, Child Behavior