Fleeting Infant Types to Enduring Traits

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Science  22 Apr 2005:
Vol. 308, Issue 5721, pp. 500
DOI: 10.1126/science.1109549

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The Long Shadow of Temperament. By Jerome Kagan and Nancy Snidman. Harvard University Press, Cambridge, MA, 2004. 302 pp. $27.95, £18.95, €25.80. ISBN 0-674-01551-7.

The authors use developmental psychology data from their long-term studies to argue that temperament is largely inherited or shaped in early childhood, with the origin of temperamental biases lying in the differential excitability of the amygdala.