Roberta M. Golinkoff, Ph.D., is a professor in the departments of Educational Studies, Psychology, and Linguistics at the University of Delaware, a Fellow of the American Psychological Association, and the recipient of the John Simon Guggenheim Memorial Fellowship. She lives in Newark, Delaware.

Kathryn Hirsh-Pasek is the Stanley and Debra Lefkowitz Faculty Fellow in the Department of Psychology at Temple University and a Senior Fellow at the Brookings Institution. Her research examines the development of early language and literacy as well as the role of play in learning. With her long-term collaborator, Roberta Golinkoff, she is author of 14 books and hundreds of publications, she is the recipient of the American Psychological Association's Bronfenbrenner Award, the American Psychological Association's Award for Distinguished Service to Psychological Science, the Association for Psychological Science James McKeen Cattell Award, the Society for Research in Child Development, Distinguished Scientific Contributions to Child Development Award and the APA Distinguished Lecturer Award. Her book Becoming Brilliant: What the Science Tells Us About Raising Successful Children was a New York Times bestseller.