Curtis Lehmann, PhD


Senior Adjunct Professor, Department of Psychology

Video Introduction

Curtis Lehmann, PhD, is a licensed clinical psychologist who joined the Department of Psychology as an assistant professor in August 2015, having previously served as an adjunct in the department from 2011-13. He earned a bachelor’s in psychology at the University of California, Irvine, where he also competed on the track and field team, was president of Athletes in Action, and was chair of Psi Chi. He then attended Fuller Theological Seminary, where he earned a master’s in psychology, master’s in Christian leadership, and PhD in Clinical Psychology. His research interests are in the psychology of religion, moral decision making, religious camps, substance use disorders, behavioral addictions, and quantitative data analysis within the general linear model. He has conducted novel research utilizing Monte Carlo methods to evaluate the Fisher z transformation, the F and Chi Square test for significance, and the effect of outliers on parameter estimation. His clinical interests are in trauma, depression, addiction, and marital therapy. Prior to his arrival at APU, he served from 2013-15 as clinic manager of Aegis Treatment Centers in West Covina, where he oversaw the treatment of patients with opioid addictions utilizing medication-assisted treatment. Lehmann has more than 7 years of clinical experience, including psychotherapy in private practice and community mental health clinics, administering and interpreting neuropsychological batteries, counseling residents at a homeless shelter, supervising first-year clinical students, and teaching parenting classes, among others. Lehmann has performed data analysis on Saddleback’s Daniel Plan and consulted on the development of a statistical program, UNIMULT. He has experience with church consultation and training in conflict resolution, and a unique blend of clinical and data analytic skill sets, which helps him to contextualize his teaching with breadth and depth.


  • PhD, Clinical Psychology, Fuller Theological Seminary
  • MA, Christian Leadership, Fuller Theological Seminary
  • MA, Psychology, Fuller Theological Seminary
  • BA (Magna Cum Laude), Psychology, University of California, Irvine

Academic Area

  • School of Behavioral and Applied Sciences