Ellen E. Pastorino (Ph.D., School Psychology, Florida State University) is a developmental psychologist who teaches psychology classes at Valencia College in Orlando, Florida. Dr. Pastorino has won numerous teaching awards, including the University of Georgia's Board of Regents Distinguished Professor, the NISOD Excellence in Teaching Award and Valencia's Teaching and Learning Excellence Award. In addition to this popular text, Dr. Pastorino has authored test banks, instructor manuals and student study guides. She has also has published her research in the Journal of Adolescent Research and Adolescence. While working as a consultant for IBM Corporation, Dr. Pastorino developed extensive educational materials for teachers and students. However, her main passion has always been to get students excited about the field of psychology. Susann M. Doyle-Portillo (Ph.D., Social Cognition, University of Oklahoma) is department head and professor of psychological science at the University of North Georgia. Dr. Doyle-Portillo also holds bachelor's degrees in engineering and psychology. She has published articles in journals such as Social Cognition, Contemporary Social Psychology, the American Journal of Health Education and Personality & Individual Differences. However, the primary focus of her career remains in teaching. During her tenure at University of North Georgia, Dr. Doyle-Portillo has twice been listed in Who's Who Among America's Teachers. In addition to her teaching and research activities, she has mentored many undergraduate researchers. In addition to co-authoring this text, she has authored several test banks, instructor manuals and student study guides.