Seth Clark, MA, BCBA

Seth Clark headshot

Behavioral Clinical Practitioner

Seth Clark, MA, BCBA, has more than 12 years of experience in the assessment, management and treatment of severe problem behavior. As a part of the Complex Behavior Support Program team, he currently oversees the Marcus Crisis Prevention Program (MCPP) and is the co-creator of the MCPP system. The goal of MCPP is to provide quality training that focuses on training teachers, staff, providers and clinicians on how to safely de-escalate and manage individuals when they become aggressive or destructive. Seth has trained staff on MCPP techniques across the United States as well as in Australia, Kazakhstan and South Korea. Moreover, Seth has extensive experience training medical and nursing staff on crisis prevention and management techniques.

Seth also has in-depth knowledge and experience in the assessment and treatment of severe problem behavior. Seth received his master's degree in applied behavior analysis from University of Maryland, Baltimore County, while also working at the Kennedy Krieger Institute Neurobehavioral Unit. After finishing his degree, Seth worked as a case manager in the Complex Behavior Support Program at Marcus Autism Center. The Complex Behavior Support Program is specifically tailored for the assessment and treatment of severe destructive behaviors like self-injury, aggression, property destruction and other dangerous behaviors. The program treats some of the most complex problem behaviors in the state of Georgia. During his time in the Complex Behavior Support Program, Seth oversaw a wide variety of complex and challenging cases. He also served as a behavior consultant to schools, hospitals, and community-based providers that work with individuals who exhibit severe problem behavior.

Seth’s current research focuses on the refinement of teaching methods to reduce crisis behavior. He also has conducted research on the assessment and treatment of severe maladaptive behavior, primarily in children with autism.


  • Call, N. A., Clark, S. B. , Lomas Mevers, J., Parks, N. A., Volkert, V. M., & Scheithauer, M. (2017). An individualized method for establishing and thinning multiple schedules of reinforcement following functional communication training. Learning and Motivation.
  • Call, N. A., Reavis, A. R., Clark, S. B., Parks, N. A., Cariveau, T., & Muething, C. S. (2017). The effects of conducting a functional analysis on problem behavior in other settings: a descriptive study on potential interaction effects. Behavior Modification.
  • Muething, C. S., Call, N. A., Lomas Mevers, J., Zangrillo, A., Clark, S. B., Reavis, A. (2017). Correspondence between the results of functional analyses and brief functional analyses. Developmental Neurorehabilitation.
  • Scheithauer, M., Cariveau, T., Call, N. A., Ormand, H., & Clark, S. B. (2016). A consecutive case review of token systems used to reduce socially maintained challenging behavior in individuals with intellectual and developmental delays. International Journal of Developmental Disabilities.

Speaking Engagements

  • Clark, S. B., Call, N, A., Lomas Mevers, J., Scheithauer, M., &. Muething, C. (2019, May). The impact of teaching emergency department direct care staff crisis management strategies. Presented at the 45th Annual Convention of the Association for Behavior Analysis International Symposium, Chicago, IL.
  • Clark, S. B., (2018). De-Escalation and crisis management techniques to reduce problem behavior displayed by individuals with autism. Presented at Berry College, Mt. Berry, GA.
  • Clark, S. B., Muething, C., & Call, N. (2018). Increasing the ecological validity of treatment for pica: An valuation of differential reinforcement. Presented at the 44th Annual Convention of the Association for Behavior Analysis International, San Diego, CA.
  • Clark, S. B., Scheithauer, M., Ekstrom, J., & Lomas Mevers, J. (2017). Functional analysis of aberrant behavior related to transitions. Presented in Denver, CO.
  • Clark, S. B., (2017). De-Escalation and crisis management techniques to reduce problem behavior displayed by individuals with autism. Lecture presented in Astana, Kazakhstan.
  • Clark, S. B., (2017). An introduction to autism spectrum disorder. Presented at Kennesaw State University Diversity Expo, Kennesaw State University, Marietta, GA.