Daniel Gilbert is a professor of psychology at Harvard University. His research on “affective forecasting” examines the mistakes people make when they attempt to predict their hedonic reactions to future events. Gilbert has won numerous awards, including the American Psychological Association’s Distinguished Scientific Award for an Early Career Contribution to Psychology. In 2008, he was elected to the American Academy of Arts and Sciences. Gilbert’s book, Stumbling on Happiness, spent six months on The New York Times’ best-seller list, has been translated into 30 languages, and was awarded the Royal Society’s General Prize for best science book. He has contributed to Time, The New York Times, and NPR’s “All Things Considered.” Gilbert hosted a six-hour “NOVA” series, “The Emotional Life,” which aired on PBS earlier this year and was watched by more than ten million viewers.