John Tierney, the coauthor of
Willpower, is a contributing editor to
City Journal and writes the "Findings" science column for the
New York Times. His writing has won awards from the American Association for the Advancement of Science and the American Institute of Physics.
Roy F. Baumeister, the coauthor of
Willpower, is a research psychologist at the University of Queensland who studies why normal adults think, feel, and act as they do. He is especially known for his work on self and identity; the negativity effect; social rejection and the need to belong; self-control; self-esteem; and how people find meaning in life.