Patricia M. Greenfield, PhD; Distinguished Professor of Psychology; Director, Children’s Digital Media Center, University of California at Los Angeles (UCLA); author of “Technology and informal education: What is taught, what is learned” (2009, Science) and Mind and Media: The Effects of Television, Video Games and Computers (1984); co-author of “Adolescents on the net: Internet use and well-being” (2007, Adolescence)