Psychologist Barry Schwartz is among the top psychology professors to follow on Twitter @BarrySch. "This author, professor, and speaker also has a sense of humor," according to a recent post on the Online Schools blog. "About his recent book, he wrote, 'If you interact with other people, you should read it.'" Schwartz also recently tweeted about his TEDxSwarthmore talk, "Why Justice Isn't Enough."

Schwartz, the Dorwin Cartwright Professor of Social Theory and Social Action, investigates the decision-making processes that underlie people's choices and the examines the effects of those choices on wellbeing. Last month, he discussed his future plans and finding the "happy medium" in a q&a with the Association for Psychological Science.