Dr. Walt Mueller is the founder and President of the Center for Parent/Youth Understanding, a non-profit organization serving schools, churches, and community organizations across the U.S, Canada, and worldwide in their efforts to strengthen families. Walt has been working with young people and families for over 35 years. He is a recognized authority on youth culture and family issues, and has appeared on numerous media outlets internationally to discuss teenagers and their world. A regular seminar and conference speaker, he communicates effectively with adults and teenagers alike. 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, 2011); 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). This book was updated and expanded and re-released in January 1999. He is a regular contributor to a variety of publications (both professional and popular) including Youthworker Journal and GROUP. Walt Mueller's commentary and analysis on youth culture is heard daily on over 800 radio stations across the United States and Canada on CPYU's daily radio program, Youth Culture Today. Walt Mueller earned his B.A. in Sociology from Geneva College (Beaver Falls, PA) and his M.Div. from Gordon-Conwell Theological Seminary (South Hamilton, MA, Summa Cum Laude), and his doctorate in postmodern generations from Gordon-Conwell Theological Seminary. Walt and his wife Lisa live in Elizabethtown, Pennsylvania, have four children and three grandchildren.

Paul Robertson is a CPYU Associate Staff member and CPYU speaker. He is also the Youth Culture Specialist for Youth Unlimited (Toronto YFC). He has nearly 40 years of experience working with youth including raising four grown sons of his own. Paul graduated from the University of Western Ontario with a Bachelor of Arts and Bachelor of Education degrees. After teaching high school for five years, Paul has been with Youth Unlimited for 35 years. Paul has done various radio interviews, television appearances, and written many articles on youth culture. His "Understanding Today’s Youth" seminars have been presented to thousands of social workers, professional groups, civic leaders, parents, educators, pastors, and youth workers. Paul has been married to Marg, a public elementary school teacher, for 39 years. Their four grown sons, Ian, Aaron, Bryon, and Nathan have been the joy of their lives. He is also the proud grandfather of Matthew, Owen, Colin, Cameron, and Avery Robertson.

Dr. Marv Penner directs All About Youth and the National Center for Excellence in Youth Ministry. In addition to his teaching, speaking and writing, Marv specializes in parent/adolescent conflict resolution, sexual abuse recovery, eating disorders and marriage and family issues. He is the author of several books including Help! My Kids Are Hurting and Hope and Healing for Kids Who Cut. In addition to his teaching, speaking and writing, Marv is a licensed marriage and family counselor specializing in parent/adolescent conflict resolution, sexual abuse recovery, eating disorders and marriage and family issues. He received his MA degree from Grace Seminary in 1985, and his D.Phil degree from Oxford Graduate School in 1993. Marv and his wife, Lois, live in British Columbia, Canada, and have three married children.

In addition to being a CPYU Associate Staff member, Dr. Amy Flavin is a therapist in New Jersey with over 20 years experience having worked extensively with adolescents and families. She is also an adjunct professor at Nyack College in Manhattan. She teaches Adolescent Psychology, Interpersonal Communication, Child Psychology and Family Counseling. Amy’s seminars focus on mental health topics and such issues as eating disorders, the impact of divorce, depression and suicide, child and adolescent psychology and parenting. Amy has also been a seminar speaker at the National Youthworkers Convention addressing the topics of minding your family while in ministry, and mental health issues in the adolescent population. She has also been a speaker at the American Psychotherapy Association’s National Convention. Amy received her BA from DePauw University, an MS in Counseling and Human Relations from Villanova University and a Ed.D., Doctor of Education, in Leadership and Communication from Northeastern University in Boston. She is a Licensed Professional Counselor and is a Member of the American Psychotherapy Association and a Board Certified Professional Counselor.

Dr. Duffy Robbins is an Associate Staff Member of CPYU. He is the Professor of Christian Ministries at Grove City College, Grove City, Pennsylvania and is a thirty-five year veteran of youth ministry. Duffy speaks around the world to teenagers and people who care about teenagers. Duffy has his D.Min. in Youth and Family Ministry from Fuller Theological Seminary, and is the author of numerous books including Ministry of Nurture, This Way to Youth Ministry: An Introduction to the Adventure, Speaking to Teenagers (which he co-wrote with Doug Fields), Youth Ministry Nuts and Bolts and Enjoy the Silence (which he co-wrote with a wonderful girl named Maggie Robbins that he married many years ago).