Robert Epstein is an American psychologist, professor, author, and journalist. He was awarded a Ph.D. in psychology by Harvard University in 1981, was editor-in-chief of Psychology Today, and has held positions at several universities including Boston University, University of California, San Diego, and Harvard University. He is also the founder and director emeritus of the Cambridge Center for Behavioral Studies in Concord, MA. In 2012, he founded the American Institute for Behavioral Research and Technology (AIBRT), a nonprofit organization that conducts research to promote the well-being and functioning of people worldwide.

Psychology Today is an American media organization with a focus on psychology and human behavior. It began as a bimonthly magazine, which first appeared in 1967. The Psychology Today website features therapy and health professionals directories and hundreds of blogs written by a wide variety of psychologists, psychiatrists, social workers, medical doctors, marriage and family therapists, anthropologists, sociologists, and science journalists.