CHAPTER 1: Introduction: Social and Emotional Development across the Life Span
written by Michael E. Lamb, 1953- and Alexandra M. Freund; edited by Alexandra M. Freund, Michael E. Lamb, 1953- and Richard M. Lerner, 1946-; in The Handbook of Life-Span Development, Vol. 2: Social and Emotional Development (Hoboken, NJ: John Wiley & Sons, originally published 2010), 1-8
