
The longest scientific study of happiness ever conducted began in 1938 at Harvard. Since then, the study has tracked the same individuals and their families, asking thousands of questions and taking hundreds of measurements to determine what makes for a good life.
Through all the years of studying these lives, it turns out that good relationships are the standout factor for their impact on physical health, mental health and longevity.
Dr. Marc Schulz, the associate director of the Harvard Study of Adult Development and the psychology chair at Bryn Mawr College, talks about the study published in a book called “The Good Life: Lessons from the World’s Longest Scientific Study of Happiness.”