The Key to a Long Life: Conscientious Habits - Yahoo! News: "'The best childhood personality predictor of longevity was conscientiousness--the qualities of a prudent, persistent, well organized person,' according to the two professors (he at the University of California--Riverside, and she at La Sierra University). 'Conscientiousness . . . also turned out to be the best personality predictor of long life when measured in adulthood.'"