Troy Fry received his B.A. in Science and Mathematics from North Dakota State University and M.S. degree in Behavior Analysis and Therapy from Southern Illinois University. Troy attended the University Of Kansas doctorate program in the Department of Human Development and Family life for four years. He has been a Board Certified Behavior Analyst for the past 25 years. Troy has worked with children and adults with significant developmental disabilities in schools, clinics, hospitals, and residential programs across North America and Europe. Over the years, he has held the positions of teacher, consultant, clinical director, and chief executive officer. He is the second author of Essential for Living, a functional skills curriculum, assessment, and professional practitioner’s handbook based on B. F. Skinner’s analysis of verbal behavior for children and adults with moderate-to-severe disabilities. He is the Associate Director of Training and Consultation Services for Patrick McGreevy, Ph.D., P.A. and Associates, and the second author of Essential for Living.