John H. Coe (Ph.D., University of California, Irvine) is the director of the Institute for Spiritual Formation at Biola University, La Mirada, CA. He is also an associate professor of spiritual theology and philosophy at the Talbot School of Theology and Rosemead School of Psychology as well as the founding editor of and contributor to the . His research and speaking is in spiritual formation and its relationship to psychology and theology, and he has contributed articles to the and the .
Todd W. Hall (Ph.D., Biola University, Doctoral specialization, University of California--Los Angeles) is director of the Institute for Research on Psychology and Spirituality, associate professor of psychology, and editor of the at Biola University. He is also the president of Alidade Research (alidaderesearch.com), a research and organizational development consulting firm. Hall developed the Furnishing the Soul Inventory, one of the most widely used measures of Christian spirituality among Christian colleges, Bible institutes and secondary schools in North America. He speaks and consults regularly on spiritual transformation, leadership and organizational development to Christian schools, nonprofits, businesses and churches around the country. Having conducted research on spiritual transformation for over fifteen years, Hall has published extensively on the topic in journals such as the and . He is also the author of (Nova Science, 2004).