Tyra P. Sellers, J.D., Ph.D., BCBA-D is the Director of Ethics at the Behavior Analyst Certification Board. She earned a B.A. in Philosophy and M.A. in Special Education from San Francisco State University, a J.D. from the University of San Francisco, and a Ph.D. from Utah State University. Her professional and research interests focus on professional ethics, training and supervision, assessment and treatment of severe problem behavior, variability, and verbal behavior. Dr. Sellers has over 20 years of clinical experience working with individuals with disabilities in a wide variety of settings. Tyra has served as a board member in various positions, for the Utah Association of Behavior Analysis. She is active with scholarly journals, serving on editorial review boards and as an associate editor for several journals.