Walt Mueller is the founder and President of the Center for Parent/Youth Understanding and has been working with young people and families for over 35 years. As a result of his work with CPYU, Walt has become an internationally-recognized speaker and author on contemporary youth culture. He has written extensively on youth culture and family issues and is the author of the following books: 99 Thoughts for Parents of Teenagers (Group Publishing, 2010); The Space Between: A Parent's Guide to Teenage Development (Zondervan, 2009); Opie Doesn’t Live Here Anymore: Where Faith, Family, and Culture Collide (Standard Publishing, August 2007); Youth Culture 101 (Zondervan, June 2007); I Want to Talk With my Teen About Movies, Music & More (Standard Publishing, September 2006); Engaging The Soul of Youth Culture: Bridging Teen Worldviews To Christian Truth (InterVarsity Press, February 2006); and the critically acclaimed Gold Medallion Award winner, Understanding Today’s Youth Culture (Tyndale House, 1994). He is also a regular contributor to numerous journals and magazines. A graduate of Geneva College (B.A.) and Gordon-Conwell Theological Seminary (M.Div.), Walt earned his doctorate at Gordon-Conwell in “Ministry to Postmodern Generations.” Walt has served in ministry with the Coalition for Christian Outreach and as a youth pastor in churches in Johnstown, PA and Philadelphia. Walt's wife Lisa has served behind the scenes since day one as CPYU’s secretary. A graduate of Geneva College who has a background in radio, Lisa’s voice can be heard on CPYU’s daily Youth Culture Today radio spot. Walt and Lisa live in Elizabethtown and have four children.