Mark A. Yarhouse (PsyD Wheaton College) is the Dr. Arthur P. Rech and Mrs. Jean May Rech Endowed Chair in Psychology and Director of the Sexual & Gender Identity Institute at Wheaton College. He is author of Understanding Sexual Identity: A Resource for Youth Ministry (Zondervan, 2013), Understanding Gender Dysphoria: Navigating Transgender Issues in a Changing Culture (IVP Academic, 2015), and Emerging Gender Identities: Understanding the Diverse Experiences of Today’s Youth (Brazos Press, 2020).