Dr. Douglas Gentile is an award-winning research scientist, educators,author, and is an associate professor of developmental psychology at Iowa State University. He conducts scientific research on the effects of media on children and adults, including studies on the positive and negative effects of video games on children, the validity of media ratings systems, how screen time contributes to youth obesity, cyberbullying, and video game and Internet “addiction.” He is the editor of the book Media Violence and Children: A Complete Guide for Parents and Professionals (2nd Ed, 2014; 1st Ed, 2003, Praeger Press), and co-author of the book Violent Video Game Effects on Children and Adolescents: Theory, Research, and Public Policy (2007, Oxford University Press). In 2010, he was honored with the Distinguished Scientific Contributions to Media Psychology Award from the American Psychological Association (Division 46). He was named one of the Top 300 Professors in the United States by the Princeton Review.His work is regularly reported on CNN, the BBC, Good Morning America, The Today Show, as well as the New York Times, Washington Post, the Straits Times, and hundreds of other newspapers and television stations internationally. He is the creator and host of the radio show The Science of Parenting, the comedy music radio show The Tom and Doug Show, and is the voice of Master Naam in DQ HERO.