Study design and methods / Paul P. Biemer, Kathryn Dowd, and Mary Bruce Webb -- Quality of the early caregiving environment and preschool well-being : an examination of children entering the child welfare system during infancy / Brenda Jones Harden ... [et al.] -- Risk and resilience among...

Part I How can we know who is happy? Conceptual and methodological issues -- Objective happiness / Daniel Kahneman -- Ecological momentary assessment / Arthur A. Stone, Sual S. Shiffman, Marten W. DeVries -- Measurement issues in emotion research / Randy J. Larsen and Barbara L. Fredrickson --...