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Jonathan Tarbox, PhD, BCBA-D

Executive Director

Dr. Jonathan Tarbox is the Executive Director of Autism Research Group, as well as the Director of Research and Development at theCenter for Autism and Related Disorders. Dr. Tarbox values his connections to the parent community and has presented at a variety of conferences for family members of individuals with ASD in the U.S. and abroad, including the Autism Society of America, Families for Effective Autism Treatment, Parents Helping Parents, the National Autism Association, the Back to School Autism Conference series, the Special Needs Network, the Autism Society of Montreal, the Autism Society of Istanbul, Turkey, and the International Autism Conference in Amman, Jordan. Dr. Tarbox is a Board Certified Behavior Analyst-Doctoral, and he received his PhD in Behavior Analysis from the University of Nevada, Reno.  His early career included positions at the New England Center for Children and the Kennedy Krieger Institute. Dr. Tarbox has conducted basic, applied, and interdisciplinary research and has over 50 publications in peer-reviewed journals, book chapters in scientific texts, and articles in popular media. In addition, Dr. Tarbox is co-editing the Handbook of Early Intervention for Autism Spectrum Disorders: Research, Practice, and Policy, to be published by Springer Publishing in 2013. Dr. Tarbox's areas of emphasis in research include behavioral approaches to complex language and cognition, the role of technology in treatment and training, and randomized controlled trials of autism treatment. Dr. Tarbox currently serves on the board of editors of The Analysis of Verbal BehaviorBehavior Analysis in Practice, and Research in Autism Spectrum Disorders and is affiliate faculty at the Chicago School for Professional Psychology.                       

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Angela Persicke, MA, BCBA

Assistant Director

Angela Persicke received her master’s degree in Psychology with an emphasis in Applied Behavior Analysis from California State University, Fresno, and is currently working on obtaining her PhD in Applied Behavior Analysis.  She has been conducting applied research with children with autism for over 6 years and obtained her BCBA in 2011.  Her research interests include behavior analysis of complex human behavior (e.g., language, cognition, social skills), dissemination of applied behavior analysis, early intervention and prevention of ASDs, performance management and staff training, and treatment and assessment for underserved populations. Her primary goal is to conduct and disseminate research that directly impacts the lives of all individuals affected by autism.

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       Adel Najdowski, PhD, BCBA-D

Senior Research Director

Dr. Adel Najdowski is a Senior Research Director for Autism Research Group and a doctorate-level Board Certified Behavior Analyst (BCBA-D). Dr. Najdowski graduated from the University of Nevada, Reno in 2004 with her doctorate in Behavior Analysis. She was a Manager of Research and Development at the Center for Autism and Related Disorders from 2005 to 2010 during which time she led a team of researchers and clinicians in the development of Skills®, a comprehensive assessment and curriculum for children with autism. She now serves as a Senior Clinical Advisor and the Director of Dissemination and Research for Skills®. Dr. Najdowski has served children with autism for 18 years. She began in 1995 as a therapist providing direct 1:1 instruction to children with autism using applied behavior analysis (ABA). Since then, Dr. Najdowski has served as a behavioral consultant for multiple school districts as well as a Clinical Specialist for the Nevada Center for Severe Behavior Problems and the Assistant Co-Director of the UNR Early Childhood Autism Center-Based Program. Dr. Najdowski has taught multiple undergraduate and graduate level courses in psychology for the University of Nevada, Reno. She serves on the editorial boards of the Journal of Applied Behavior Analysis and Behavior Analysis in Practice and has over 30 publications in peer-reviewed journals, book chapters in scientific texts, and articles in popular media. Her current interests include teaching higher-order skills to children with autism, assessment and curriculum design for children with autism, evaluation of procedures used in early intensive behavioral intervention programs, and feeding disorders.

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Michele Bishop, PhD, BCBA-D

Senior Research Director

Dr. Michele Bishop currently serves as a Senior Research Director and the Director of Outreach and Dissemination for Autism Research Group.  Dr. Bishop has held a variety of positions in the field of behavior analysis, having worked in public schools and home-based and center-based treatment programs with individuals with and without autism and other developmental disabilities.  Her career has included positions as a school psychologist in Orange County, Florida, a behavioral consultant for the UNR Early Childhood Autism Outreach Program in Reno, Nevada, and the Associate Director for the UNR Early Childhood Autism Program for 4 years in Reno, Nevada.  Dr. Bishop is a Board Certified Behavior Analyst-Doctoral and a licensed behavior analyst in Arizona.  She earned an Ed.S. in school psychology from the University of Central Florida and a Ph.D. in behavior analysis from the University of Nevada, Reno under the direction of Dr. Patrick Ghezzi.  Dr. Bishop has taught undergraduate and graduate level courses in ABA for the University of Nevada, Reno, Arizona State University, and the Jordan University of Science and Technology and currently serves on the board of directors for the Four Corner Association for Behavior Analysis.  She has presented workshops for parents and clinicians nationally at meetings of the California Association for Behavior Analysis and the Nevada Association for Behavior Analysis and internationally at the King Faisal Specialist Hospital and Research Center in Riyadh, Saudi Arabia.  Dr. Bishop has published research in peer-reviewed journals and written book chapters on topics related to behavior analysis and autism.  Dr. Bishop’s primary professional interests are the treatment of children with autism, improving compliance with medical and dental procedures, examination of basic behavioral processes, staff and parent training, and the dissemination of behavior analysis.

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Megan St. Clair, MA

Associate Scientist


Megan St. Clair received her MA in Clinical Psychology with an emphasis in marriage and family therapy at Pepperdine University in 2012, and is currently working on obtaining her PhD in Applied Behavior Analysis.  Her research interests include early intervention and prevention of ASDs, treatment and recovery, parent, staff, and sibling training, systematic improvement in skill deficits, behavior analysis of complex human behavior, and interdisciplinary research. 

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