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 --...

From earning to learning / Susan E. Mayer -- Aptitude or achievement : why do test scores predict educational attainment and earnings? / Christopher Jencks and Meredith Phillips -- Economic success and the evolution of schooling and mental ability / Christopher Winship and Sanders D. Korenman --...