Richard M. Lerner, Ph.D. is Bergstrom Chair in Applied Developmental Science at the Eliot-Pearson Department of Child Development at Tufts University. He is the author or editor of many publications, including the Handbook of Child Psychology, Sixth Edition and the Handbook of Psychology, Volume 6, Developmental Psychology. Dr. Lerner is also a past editor of the Journal of Research on Adolescence.

Laurence Steinberg, Ph.D., is the Distinguished University Professor and Laura H. Carnell Professor of Psychology at Temple University. He is Past-President of the Division of Developmental Psychology of the American Psychological Association and a former President of the Society for Research on Adolescence. Dr. Steinberg is the author or co-author of many publications, including Adolescence (8th edition).