For over 75 years, Harvard’s Grant and Glueck study has tracked the physical and emotional health of two groups: 456 poor people in Boston from 1939 to 2014 (the Grant Study) and 268 graduates from Harvard’s classes of 1939–1944 (the Glueck study). After following these groups and testing them (e.g., blood samples, brain scans) for several decades, the findings have been compiled.
This 75-Year Harvard study shows how to have lifetime joy
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