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 --...

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...

The costs of mental ill-health for the individuals concerned, employers and society at large are enormous. Mental illness is responsible for a very significant loss of potential labour supply, high rates of unemployment, and a high incidence of sickness absence and reduced productivity at work....