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Tonya Davis

ABA Program Director

Tonya Davis, Ph.D., BCBA-D, is an assistant professor and a Board Certified Behavior Analyst-Doctoral. She earned a Ph.D. in Special Education with an emphasis in Applied Behavior Analysis (ABA) and Autism and Developmental Disabilities from the University of Texas at Austin. Dr. Davis has published many peer-reviewed research papers regarding the education and treatment of individuals with autism and other developmental disabilities. Her primary research interests involve communication intervention and treatment of challenging behaviors in individuals with intellectual and developmental disabilities. Dr. Davis’ research is most often conducted in applied settings such as the Baylor Autism Resource Center.

Email: Tonya_Davis@baylor.edu

Phone:  254-710-6166


Kristen Mainor, Ed.S., LSSP,BCBA

Director of Behavioral and Educational Services, Baylor Center for Development Disabilities

Kristen Mainor, Ed.S., LSSP, BCBA is the Director of Behavioral and Educational Services for the Baylor Center for Developmental Disabilities. Ms. Mainor coordinates and supervises all ABA practicum experiences at the Baylor Clinic for Assesment,Research, and Education

Email: Kristen_Mainor @baylor.edu

Phone:  254-710-6166

Terrill Saxon

Terrill F. Saxon, Ph.D.,

Master’s Program Director

Email: Terrill_Saxon@baylor.edu

Phone:  254-710-6101



Susan K. Johnsen, Ph.D.,

Educational Psychology Doctoral Program Director

Susan K. Johnsen, Ph.D.,  is a professor in the Department of Educational Psychology at Baylor University in Waco, Texas, where she directs the PhD program and programs related to gifted and talented education. She is editor of Gifted Child Today and coauthor of Identifying Gifted Students: A Practical Guide, the Independent Study Program, RTI for Gifted Students, Using the National Gifted Education Standards for University Teacher Preparation Programs, Using the National Gifted Education Standards for PreK-12 Professional Development, and more than 200 articles, monographs, technical reports, and other books related to gifted education. She has authored three tests used in identifying gifted students: Test of Mathematical Abilities for Gifted Students (TOMAGS), Test of Nonverbal Intelligence (TONI-4) and Screening Assessment Gifted Students (SAGES-2). She serves on the Board of Examiners of the National Council for Accreditation of Teacher Education and is a reviewer and auditor of programs in gifted education. She is past president of the Association for the Gifted (TAG), Council for Exceptional Children and past president of the Texas Association for Gifted and Talented (TAGT).  She has received awards for her work in the field of education, including CEC’s Leadership Award, NAGC’s President’s Award, TAG’s Leadership Award, TAGT’s President’s Award, and Baylor University’s Investigator Award, Teaching Award, and Contributions to the Academic Community.

Email: Susan_Johnsen@baylor.edu

Phone:  254-710-6116