ABA Team

Stimulus Publications ABA Advisors

Michael M. Mueller, Ph.D., BCBA-D

Mike Mueller

Professional Life: Dr. Mueller obtained his Ph.D. in School Psychology from the University of Southern Mississippi in 2002. Co-founder of Southern Behavioral Group, Mike has practiced Applied Behavior Analysis with children with Autism in Home, Public School, Private School, State Residential, Group Home, Clinic, and Community Settings.

Mike is the author of 9 Books, 5 Book Chapters, and 25 Journal Articles. He has delivered more than 100 conference presentations around the United States and internationally. Mike is a Past President of the Georgia Association for Behavior Analysis and a Past Chair of the Behavioral School Psychology Interest Group of the National Association of School Psychologists. He is the 2002 recipient of the Sidney and Janet Bijou Award given by the Association for Behavior Analysis for scholarly activities in behavior analytic child development research. Dr. Mueller is on the Editorial Board of several scholarly journals in the field of Applied Behavior Analysis and School Psychology including Psychology in the Schools, Behavior Modification, Journal of Early and Intensive Behavior Therapy, and theJournal of Evidence Based Practices in Schools.

Mike’s published research has involved parent training, teacher training, functional behavioral assessments in school settings, functional analysis in school settings, pediatric feeding disorders, compliance training, functional communication training, discrete trials therapy, errorless learning strategies, behavior analytic consultation to schools, behavior analytic approaches to early reading and reading comprehension, aggression, self-injury, property destruction, noncompliance, tantrums, object mouthing, hand flapping, and other behavioral challenges demonstrated by children with autism. Mike’s work has been published in prestigious field journals including the Journal of Applied Behavior Analysis, Education and Treatment of Children, Behavioral Interventions, International Journal of Behavioral Consultation and Therapy, Psychology in the Schools, School Psychology Review, Proven Practice: Prevention and Remediation Solutions for Schools, Journal of Organizational Behavior Management, and the Behavioral School Psychology Digest.

Ajamu Nkosi, Ph.D., BCBA-D


Dr. Ajamu Nkosi is a Co-Founder of Southern Behavioral Group in Atlanta, Georgia. He is also a Board-Certified Behavior Analyst who holds a Ph.D. degree from Temple University in Educational Psychology. Dr. Nkosi is currently an active member of several organizations devoted to upholding the professional practice of applied behavior analysis. These organizations include The American Psychological Association, The Association of Behavior Analysis, The Association for Contextual and Behavioral Science, The Georgia Association of Behavior Analysis and The Florida Association of Behavior Analysis. He is also the first recipient of the 2002 Margaret Messinger Award given by Temple University’s Department of Educational Psychology for academic excellence.

Dr. Nkosi possesses a wide-range of knowledge and training in Educational Psychology and Applied Behavior Analysis. His research interests focus on learning theory, teaching and instruction, the functional assessment and treatment of severe problem behavior, and school consultation. He is the author of 3 books including the groundbreaking Behavior Analytic Consultation to Schools and has delivered numerous presentations nationally.

Currently, Dr. Nkosi provides behavior analytic consultation services to school districts in the greater Atlanta area for children with autism and other developmental disabilities. He provides services on training school personnel in the application of effective teaching and instruction, utilizing behavioral principles and procedures in the classroom, functional behavioral assessment and treatment of severe problem behaviors, and developing positive behavior support plans.

Drs. Mueller and Nkosi are available to present workshops and provide home- and school-based consultations, parent training, compliance training and a wide range of other behavioral services through Southern Behavioral Group, Inc. Contact them to learn more or to book your appointment.