Information was gathered about their mental and physical health, career enjoyment, retirement experience and marital quality.

The first book, Adaptation to Life, describes the study up to a time when the men were 47 years of age.

[4] The second book, Aging Well, describes a time when the inner-city men were 70 years old and those of the Harvard group were 80.

[5] In 2012, Vaillant and Harvard University Press published the third book, Triumphs of Experience, which shared more findings from the Grant Study.

Among the most notable Grant Study participants included Ben Bradlee, an editor of The Washington Post, and US President John F.