Sonja Lyubomirsky is a Russian-born American professor in the Department of Psychology at the University of California, Riverside and author of The How of Happiness: A Scientific Approach to Getting the Life You Want.

Lee David Ross was a Canadian-American professor. He held the title of the Stanford Federal Credit Union Professor of Humanities and Sciences at Stanford University and was an influential social psychologist who studied attributional biases, shortcomings in judgment and decision making, and barriers to conflict resolution, often with longtime collaborator Mark Lepper. Ross was known for his identification and explication of the fundamental attribution error and for the demonstration and analysis of other phenomena and shortcomings that have become standard topics in textbooks and in some cases, even popular media. His interests included ongoing societal problems, in particular protracted inter-group conflicts, the individual and collective rationalization of evil, and the psychological processes that make it difficult to confront societal challenges. Ross went beyond the laboratory to involve himself in conflict resolution and public peace processes in the Middle East, Northern Ireland, and other areas of the world.