Winter, David G. "Things I've Learned About Personality From Studying Political Leaders at a Distance." Journal of Personality 73, no. 3 (2005): 557-584.
In this version of an award address delivered at the annual meeting of the American Psychological Association, Winter summarizes more than 20 years of research in which he has applied content analysis to assess achievement, affiliation, and power motives of U.S. presidents.