Meet Our Staff

Patrick McGreevy Ph.D., BCBA-D

Patrick McGreevy received B.S. and M.A. degrees in Psychology and Special Education, respectively, from the University of Iowa. He was a special education teacher for eight years, working with children and young adults with moderate-to-severe developmental disabilities. He received the Ph.D. degree in Education from Kansas University under the guidance of Ogden R. Lindsley. He has served on the faculties of the University of Missouri-Kansas City, Louisiana State University, the University of Central Florida, and the Florida Institute of Technology. He is the author of Teaching and Learning in Plain English, an introduction to Precision Teaching, and the founder and first editor of the Journal of Precision Teaching and Standard Celeration Charting. He is the author of ten journal articles and a book chapter on teaching verbal behavior. He is the first 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. For the past 30 years, he has provided consultations for children and adults with developmental disabilities in school districts, residential programs, and hospitals, specializing in the simultaneous management of aggressive and self-injurious behavior and the teaching of communication and language skills to individuals with limited repertoires. He is board certified behavior analyst, has given hundreds of presentations and workshops around the world, and is the recipient of the Ogden R. Lindsley Lifetime Achievement Award of the Standard Celeration Society. He is the President and Director of Consultation and Training Services for Patrick McGreevy, Ph.D., P.A. and Associates.

Troy A. Fry M.S., BCBA

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, and is a Board Certified Behavior Analyst. For the past 25 years, Troy has worked with children and adults with developmental disabilities in public schools, private schools, centers, clinics, home-programs, hospitals, and residential programs in North America as a teacher, behavior analyst, senior clinician, consultant, and clinical director. He is the founder and clinical director of Behavior and Language Consultants in Minneapolis, MN and Chicago, IL, 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.

A. Hunter Williams M.S., BCBA

Hunter received a B.S. from the University of Central Florida in 2006 and an M.S. degree in Applied Behavior Analysis from the Florida Institute of Technology in 2010. He is a board certified behavior analyst with ten years of experience with children with autism and other developmental disabilities in an early intervention program and with adults in residential settings. His experience includes teaching verbal behavior and managing intense problem behavior. He is the co-director of the Essential for Living Clinic in Longwood (Orlando), FL and he provides training and consultation services for Patrick McGreevy, Ph.D., P.A. and Associates.