Tim Muehlhoff (PhD, University of North Carolina at Chapel Hill) is a professor of communication at Biola University in La Mirada, California, where he teaches classes in family communication, interpersonal communication, persuasion, and gender. He is the author of I Beg to Differ and Marriage Forecasting, and the coauthor of The God Conversation: Using Stories and Illustrations to Explain Your Faith and Authentic Communication: Christian Speech Engaging Culture. Muehlhoff and his wife, Noreen, are frequent speakers at FamilyLife Marriage Conferences, and Tim also serves as a speaker/author with Biola's Center for Marriage and Relationships.