Dr. William Fleeson is Professor of Psychology at Wake Forest University. He has been associate editor and consulting editor of several leading journals, and has been PI on two separate NIH R01s. His work focuses on examining actual behavior, behavior patterns, and behavior contingencies in order to obtain new insights about personality constructs and to explain the mechanisms and operation of personality constructs, especially moral character and borderline personality disorder. His work on this line of research has resulted in several publications in leading journals such as the Journal of Personality and Social Psychology, Journal of Personality, and Journal of Research in Personality, and in the 2002 Society for Personality and Social Psychology Theoretical Innovation Prize.

Fleeson received a B.A. in Philosophy from the University of Wisconsin–Madison in 1987, and a Ph.D. in Psychology from the University of Michigan in 1992.