Christopher Grace serves as the director of the Biola University Center for Marriage and Relationships and teaches psychology at Rosemead School of Psychology. He and his wife, Alisa, speak regularly to married couples, churches, singles and college students on the topic of relationships, dating and marriage. Grace earned his M.S. and Ph.D. in experimental social psychology from Colorado State University.
Tim Muehlhoff is a professor of communication at Biola University and author of several books, including I Beg to Differ and Marriage Forecasting. His most recent publication, Defending Your Marriage, speaks to spiritual warfare in marriage and how to equip yourself to defend your relationship. For the past 18 years, he and his wife, Noreen, have been frequent speakers at FamilyLife marriage conferences. Muehlhoff regularly writes and speaks for the Biola University Center for Marriage and Relationships. Follow Dr. Muehlhoff on Twitter.