In 1938 Harvard University began following 268 male undergraduate students and kicked off the longest-running longitudinal studies of human development in history. The study’s goal was to determine as best as possible what factors contribute most strongly to human flourishing. For the 30 years, George Vaillant, who also teaches in MAPP, has taken care of this study. A little while ago, he published a fascinating book on this: Triumphs of Experience: The Men of the Harvard Grant Study. It´s a fascinating into the principles of positive psychology.
If you don´t have time to read the whole book, you might want to read this article on Feelguide instead.
Mappalicious 