David Walsh is an American psychologist, educator, and author specializing in parenting, family life and the impact of media on children and teens. Walsh was the president and founder of the National Institute on Media and the Family based in Minneapolis, MN until it closed its doors in 2009. All of the programs and products of the National Institute on Media and the Family have been transferred to the Search Institute. He has written eight books including the national best seller Why Do They Act That Way? A Survival Guide to the Adolescent Brain for You and Your Teen (Free Press, 2004. ISBN 978-0-7432-6071-8) and No, Why Kids - of All Ages - Need to Hear It and Ways Parents Can Say It. In 2010, he and his wife, Monica, and daughter, Erin, launched Mind Positive Parenting. Mind Positive Parenting translates brain science into tips, tools, and resources for parents and professionals.