Linda Acredolo, Ph.D., Professor Emeritus of Psychology at the University of California at Davis, is an internationally recognized scholar in the field of child development. She is a Fellow of both the American Psychological Association and the American Psychological Society and has served as an associate editor of the prestigious journal, Child Development. She is also a member of the Parents magazine advisory board.

Susan Goodwyn, Ph.D., Professor Emeritus of Psychology at the California State University at Stanislaus, has served as a project director and co-principle investigator for several longitudinal research projects funded by the National Institutes of Health and the Kellogg Foundation. She currently serves as president of Baby Signs, Inc., an infant and toddler educational products company.