Kimberly A. Gordon Biddle has a PhD from Stanford University in Child and Adolescent Development. She is an American Psychological Association MFP Fellow. She is a college professor of 26 years. This is her second co-authored textbook. She is the author or co-author of over 15 peer-reviewed articles and some book chapters. She is a presenter or co-presenter of more than 35 peer-reviewed presentations. She is also the winner of one of the Stanford GSE Alumni Awards for Excellence in Education for 2018. Aletha M. Harven is an Assistant Professor of Psychology and Child Development at California State University, Stanislaus. She obtained her BA and MA at Sacramento State and her PhD from UCLA. She has authored and co-authored book chapters, peer-reviewed articles, and peer-reviewed presentations. Cynthia Hudley is a Professor Emerita in the Department of Education program in Educational Psychology. She also served as an Associate Dean for the UCSB Graduate Division, President of Division E of the American Educational Research Association, and a member of the Board of Educational Affairs for the American Psychological Association