When Friedman and his associates analyzed the Terman Life Cycle Study to find the personality characteristics that predict long life, they found a link between and longevity.

Conscientiousness

Explanation:

When Friedman and his associates analyzed the Terman Life-Cycle Study to find the personality characteristics that predict long life, they found a link between conscientiousness and longevity.

The Terman Life-Cycle Study also known as Genetic Studies of Genius is a study in the field of psychology that is considered to be the longest study that repeatedly followed individuals throughout their lives from childhood through death. This study was started by Lewis Terman. In the study conducted by Friedman and his associates, Howard S. Friedman’s suggested that conscientious individuals live longer. He quoted that "Not only do conscientious individuals have better health habits and less risk-taking, but they also travel life pathways toward healthier psychosocial environments"

Conscientiousness which is associated with being dependable, organized, self-disciplined, and reliable has been shown to predict health behaviors which remained a significant predictor of mortality that predicts longevity both because of its relation to cognitive functioning and for reasons independent of cognitive functioning.

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