Tim Muehlhoff is an associate professor at Biola University in La Mirada, Calif., who specializes in teaching marital and family communication and conflict resolution. He has also been a regular speaker at FamilyLife marriage conferences since 1995. Muehlhoff holds a Ph.D. in communication from the University of North Carolina, and he has authored numerous articles and several books. He and his wife, Noreen, have three sons.