In 1938, Harvard began following 268 young men to see what made a good life, and after more than eight decades the clearest predictor of health and happiness in old age wasn’t wealth or career — it was the quality of their close relationships
The Harvard Study of Adult Development followed 268 young men starting in 1938, and after more than eighty years of measurement, the strongest predictor of health and happiness in old age was not wealth, career, or status. It was the quality of their close relationships.