Triumphs of Experience: The Men of the Harvard Grant Study

At a time when many people around the world are living into their tenth decade, the longest longitudinal study of human development ever undertaken offers some welcome news for the new old age: our lives continue to evolve in our later years and often become more fulfilling than before.

Begun in 1938, the Grant Study of Adult Development charted the physical and emotional health of over two hundred men, starting with their undergraduate days. The now-classic Adaptation to Life reported on th...