Current Board of Directors

Jamie Severtson

Jamie Severtson

President (2016-2019)

Dr. Jamie M. Severtson is a Board Certified Behavior Analyst (BCBA-D) and a Licensed Behavior Analyst (LBA) in the state of Missouri with nearly 20 years of experience working with children and adults with Autism Spectrum Disorders and other Developmental Disabilities. She received a Bachelor’s of Science degree from Bradley University in 2004, and she graduated from Western Michigan University in 2010 with a PhD in Psychology with an emphasis in Applied Behavior Analysis (ABA­) under the mentorship of Dr. James E. Carr. She is currently an Assistant Professor in the College of Education at Southeast Missouri State University, where she developed and coordinates the online Master of Arts of Applied Behavior Analysis program and the University Intensive Collaborative ABA Practicum.  She has been recognized for her clinical, teaching and leadership skills by earning awards for Outstanding Mentor (2016), Teaching Effectiveness (2016), Clinical Excellence (2012), and Outstanding Manger (2009).  Her clinical expertise and interests are in the areas of function-based assessment and treatment of problem behavior, teaching social and daily living skills, parent, staff, and educator training, school consultation, verbal behavior, and Early Intensive Behavioral Intervention. Her research has evaluated staff training methods, functional treatments for problem behavior, methods of teaching verbal operants, and teaching pre-vocational and vocational skills. Her future research and clinical interests include expanding behavioral services to rural and under-severed communities through intensive case-coordination and telehealth technology, improving distance learning and telehealth services, increasing opportunities for meaningful professional development, and promoting collaboration across disciplines. She has published articles in Behavior Analysis in Practice, The European Journal of Behavior Analysis, The Behavior Analyst, Research in Developmental Disabilities, and The Analysis of Verbal Behavior. She has also served as a Guest Reviewer for the Journal of Applied Behavior Analysis.

Leanna Hopper

Leanna Hopper

President Elect (2017-2020)

Leanne Hopper is a Board Certified Behavior Analyst (BCBA) and is a Missouri Licensed Behavior Analyst (LBA).   She has over 16 years of experience working with individuals with developmental disabilities and Autism Spectrum Disorder (ASD) in home, clinical, and school settings.  In 2005, Leanne received a Master of Arts degree from the University of Nevada-Reno in Behavior Psychology, with an emphasis in Applied Behavior Analysis (ABA).  She is in process of completing her dissertation toward a doctorate in Educational Leadership and Policy Analysis through the University of Missouri-Columbia/Southeast Missouri State University.  Graduation is anticipated toward the end of 2018.  Leanne is currently the Executive Director of Autism Support Now, an organization that provides comprehensive and focused ABA services to families and individuals with ASD in the Southeast Missouri and Kansas City region.  She has worked at Southeast Missouri State University Autism Center; and the MU Thompson Center for Autism and Neurodevelopmental Disabilities.  Leanne’s clinical expertise focuses on Early Intensive Behavior Intervention (EIBI) with young children with ASD.  She is particularly interested in developing and expanding vocal mand repertoires for early learners.  Leanne has led an EIBI classroom at the Southeast Missouri Autism Center and was also adjunct faculty for the Intensive Practicum under the Master of Art Applied Behavior Analysis Program at the University.  She received Autism Advocate of the Year from the Illinois Autism Society in 2014.  Her research interests include using telehealth to increase access to behavioral services in rural areas throughout Missouri, exploring the research to practice gap of using FA within FBAs, and using an online training platform to increase efficiency in training for staff and parents.

Todd Streff

Todd Streff

Treasurer (2015-2018)

Todd is the Executive Director of Streff Behavior Consulting.  He is a Nationally Board Certified Behavior Analyst and Licensed Behavior Analyst.  Streff Behavior Consulting, LLC provides contemporary Applied Behavior Analysis services to schools, families, and clinics across the United States and Internationally.  Since 1994 Todd has been providing services to a variety of populations including children and adults with autism, mental retardation, dual diagnosis, traumatic brain injury, and typically developing individuals.  His specializations and experience are in the areas of early intervention for children and adolescents with autism, development of school based ABA programs, training of school personnel, ABA implementers and parents, feeding issues, and addressing challenging behaviors.  He has presented at state and national conventions, various educational conferences, been adjunct faculty at Washington University, has conducted workshops, trainings and invited lectures across the United States and internationally.  Todd currently serves on the board for the Missouri Association for Behavior Analysis and chairs the Missouri Behavior Analyst Advisory Board.

Casey Clay

Casey Clay

Secretary (2017-2020)

Dr. Casey Clay is an Assistant Professor in the Department of Health Psychology at the University of Missouri. He is a Board Certified Behavior Analyst (BCBA-D) and Licensed Behavior Analyst (LBA) in the state of Missouri. He received a Master of Science degree from Northeastern University in Applied Behavior Analysis (ABA) and a Ph.D. from Utah State University in Disability Disciplines. After his Ph.D. program he completed a Post-doctoral fellowship at the University of Missouri. He has over 10 years of clinical experience designing and implementing ABA programs with individuals with disabilities including working at the ASSERT preschool and Behavior Support Clinic in Logan, UT; the New England Center for Children in Boston, MA; and the MU Thompson Center for Autism and Neurodevelopmental disabilities in Columbia, MO. He also has published his research in the Journal of Applied Behavior Analysis (JABA), Behavior Analysis in Practice, Research in Developmental Disabilities, and Learning and Motivation. He has also served as a guest reviewer for JABA, Journal of Behavioral Education, Behavioral Interventions, and The Behavior Analyst. His research focuses on evaluation of preference for and reinforcing efficacy of novel stimuli (e.g., social interactions, therapy animals), reduction of severe problem behavior, and methodologies to increase efficiency of skills training for clinicians and pre-service behavior analysts.

SungWoo Kahng

SungWoo Kahng

Member at Large (2015-2018)

SungWoo Kahng is an associate professor and chair of the Department of Health Psychology at the University of Missouri. He is also the Director of the Applied Behavioral Intervention Service of the MU Thompson Center for Autism and Neurodevelopmental Disorders. Prior to his current position, he was a faculty member in the Department of Behavioral Psychology and a senior behavior analyst on the Neurobehavioral Unit at the Kennedy Krieger Institute as well as an associate professor in the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine. Dr. Kahng graduated from Kalamazoo College with a bachelor’s of arts in psychology and received his Ph.D. in behavior analysis from the University of Florida. He is currently an Associate Editor for the Journal of Applied Behavior Analysis where he also served on the Board of Editors. Additionally, he is on the Board of Editors for Behavioral Intervention and has served as an ad hoc reviewer for numerous other journals. He is a Board Certified Behavior Analyst and a Licensed Behavior Analyst in the State of Missouri. Dr. Kahng is the recipient of the 2003 B.F. Skinner New Researcher Award given by Division 25 of the American Psychological Association. Dr. Kahng has co-authored over 70 peer reviewed articles and chapters. The focus of his research and clinical work has been on assessing and treating behaviors exhibited by individuals with developmental disabilities. He is also interested in a broader research agenda, which includes topics related to obesity and aging. Finally, he has mentored numerous undergraduate, master’s level, and predoctoral students as well as post-doctoral fellows.

John Guercio

John Guercio

Member at Large (2017-2020)

Dr. John Guercio has spent much of his career researching effective staff training protocols and behavior intervention strategies for staff and clients in settings where severe aggression is present. Since obtaining his master’s and doctoral degrees in behavior analysis and therapy from Southern Illinois University at Carbondale, Dr. Guercio has worked in settings serving as Director of Behavioral Services for the Missouri Department of Mental Health, and as Vice President of Clinical Services and Research at the Judevine Center for Autism/TouchPoint Autism Services in St. Louis. He also serves as adjunct faculty in the behavior analysis department at Washington University, St. Louis University and Central Missouri University. He has also given more than 100 presentations at behavioral conferences and authored and/or co-authored over 50 articles in peer reviewed journals as well as written several book chapters related to the treatment of intensive behavioral issues. Dr. Guercio serves on the Board of Editors of Behavior Analysis Research and Practice and a guest reviewer for the Journal of Applied Behavior Analysis. In his career, Dr. Guercio has helped design and run a program for individuals with sexually deviant behavior and substance abuse issues and has developed an entire treatment protocol based upon that program.  In his current role at Benchmark Human Services, Dr. Guercio serves as the Clinical Director. He develops and delivers behavioral services for clients with significant aggression and high risk behavioral needs, many of whom have been institutionalized for more than 15 years, often under restraints and heavy medication. Through Dr. Guercio’s leadership, many clients’ medication dosages have decreased and, they have developed positive compensatory behaviors and are being integrated into the community. Dr. Guercio currently serves as the Coordinator for the Practice Track of the annual ABAI conference and is a board member of the Illinois Association for Behavior Analysis.

Nicole Schroeder

Nicole Schroeder

Student Representative (2017-2019)

Nicole Schroeder is a current graduate certificate student at the University of Kansas. Nicole received her undergraduate degrees from Northwest Missouri State in elementary education and cross categorical special education. While attending Northwest, She was introduced to ABA through a family who was involved on her special Olympics team. While at Northwest, she did three years of ABA therapy in home and decided to expand horizons and try center based therapy. Upon graduation, she moved to Columbia, Missouri to work at the Thompson Center for Autism and Neurodevelopmental Disabilities in the ABIS division, working primarily in EIBI. Nicole graduated with her masters from the University of Missouri  in Special Education: Autism Emphasis. While working on her masters, she did research on Pivotal Response Training in the school setting as well as looking at types of therapies, both evidence based and non-evidence based, that are commonly utilized in the school special education school setting. Following her work at the Thompson Center, she moved to Kansas City, Missouri to start her work at the company in which she is currently employed, Autism Support Now. At Autism Support Now, she is currently the Lead Registered Behavior Technician as well as the Client Coordinator. Nicole plans to sit for her boards to become a BCBA in early 2019. Nicole’s research interests include expanding the use of Pivotal Response Training in public schools through paraprofessionals, expanding opportunities for ABA specific professional development in schools, enhancing in home parent trainings through Behavioral Skills Training and establishing social skills groups through sports teams.

Current Board of Directors

Jamie Severtson

Jamie Severtson

President (2016-2019)

Dr. Jamie M. Severtson is a Board Certified Behavior Analyst (BCBA-D) and a Licensed Behavior Analyst (LBA) in the state of Missouri with nearly 20 years of experience working with children and adults with Autism Spectrum Disorders and other Developmental Disabilities. She received a Bachelor’s of Science degree from Bradley University in 2004, and she graduated from Western Michigan University in 2010 with a PhD in Psychology with an emphasis in Applied Behavior Analysis (ABA­) under the mentorship of Dr. James E. Carr. She is currently an Assistant Professor in the College of Education at Southeast Missouri State University, where she developed and coordinates the online Master of Arts of Applied Behavior Analysis program and the University Intensive Collaborative ABA Practicum.  She has been recognized for her clinical, teaching and leadership skills by earning awards for Outstanding Mentor (2016), Teaching Effectiveness (2016), Clinical Excellence (2012), and Outstanding Manger (2009).  Her clinical expertise and interests are in the areas of function-based assessment and treatment of problem behavior, teaching social and daily living skills, parent, staff, and educator training, school consultation, verbal behavior, and Early Intensive Behavioral Intervention. Her research has evaluated staff training methods, functional treatments for problem behavior, methods of teaching verbal operants, and teaching pre-vocational and vocational skills. Her future research and clinical interests include expanding behavioral services to rural and under-severed communities through intensive case-coordination and telehealth technology, improving distance learning and telehealth services, increasing opportunities for meaningful professional development, and promoting collaboration across disciplines. She has published articles in Behavior Analysis in Practice, The European Journal of Behavior Analysis, The Behavior Analyst, Research in Developmental Disabilities, and The Analysis of Verbal Behavior. She has also served as a Guest Reviewer for the Journal of Applied Behavior Analysis.

Leanna Hopper

Leanna Hopper

President Elect (2017-2020)

Leanne Hopper is a Board Certified Behavior Analyst (BCBA) and is a Missouri Licensed Behavior Analyst (LBA).   She has over 16 years of experience working with individuals with developmental disabilities and Autism Spectrum Disorder (ASD) in home, clinical, and school settings.  In 2005, Leanne received a Master of Arts degree from the University of Nevada-Reno in Behavior Psychology, with an emphasis in Applied Behavior Analysis (ABA).  She is in process of completing her dissertation toward a doctorate in Educational Leadership and Policy Analysis through the University of Missouri-Columbia/Southeast Missouri State University.  Graduation is anticipated toward the end of 2018.  Leanne is currently the Executive Director of Autism Support Now, an organization that provides comprehensive and focused ABA services to families and individuals with ASD in the Southeast Missouri and Kansas City region.  She has worked at Southeast Missouri State University Autism Center; and the MU Thompson Center for Autism and Neurodevelopmental Disabilities.  Leanne’s clinical expertise focuses on Early Intensive Behavior Intervention (EIBI) with young children with ASD.  She is particularly interested in developing and expanding vocal mand repertoires for early learners.  Leanne has led an EIBI classroom at the Southeast Missouri Autism Center and was also adjunct faculty for the Intensive Practicum under the Master of Art Applied Behavior Analysis Program at the University.  She received Autism Advocate of the Year from the Illinois Autism Society in 2014.  Her research interests include using telehealth to increase access to behavioral services in rural areas throughout Missouri, exploring the research to practice gap of using FA within FBAs, and using an online training platform to increase efficiency in training for staff and parents.

Todd Streff

Todd Streff

Treasurer (2015-2018)

Todd Streff is a Board Certified and Licensed Behavior Analyst who received his Master’s degree in Behavior Analysis and Therapy from Southern Illinois University at Carbondale. He is the Executive Director of Great Strides Behavioral Consulting, Inc. which provides services to schools and private families across the United States and internationally. For more than 15 years he has been providing services to a variety of populations including children and adults with autism, mental retardation, dual diagnosis, traumatic brain injury, and typically developing children. His specializations and experience are in the areas of early intervention for children and adolescents with autism, development of school based ABA programs, training of both school personnel and parents, feeding issues, and addressing behavior problems. He has presented at state and national conventions and various educational conferences, served as an adjunct faculty, and has conducted many workshops, staff trainings and invited lectures in the United States and internationally.

Casey Clay

Casey Clay

Secretary (2017-2020)

Dr. Casey Clay is an Assistant Professor in the Department of Health Psychology at the University of Missouri. He is a Board Certified Behavior Analyst (BCBA-D) and Licensed Behavior Analyst (LBA) in the state of Missouri. He received a Master of Science degree from Northeastern University in Applied Behavior Analysis (ABA) and a Ph.D. from Utah State University in Disability Disciplines. After his Ph.D. program he completed a Post-doctoral fellowship at the University of Missouri. He has over 10 years of clinical experience designing and implementing ABA programs with individuals with disabilities including working at the ASSERT preschool and Behavior Support Clinic in Logan, UT; the New England Center for Children in Boston, MA; and the MU Thompson Center for Autism and Neurodevelopmental disabilities in Columbia, MO. He also has published his research in the Journal of Applied Behavior Analysis (JABA), Behavior Analysis in Practice, Research in Developmental Disabilities, and Learning and Motivation. He has also served as a guest reviewer for JABA, Journal of Behavioral Education, Behavioral Interventions, and The Behavior Analyst. His research focuses on evaluation of preference for and reinforcing efficacy of novel stimuli (e.g., social interactions, therapy animals), reduction of severe problem behavior, and methodologies to increase efficiency of skills training for clinicians and pre-service behavior analysts.

SungWoo Kahng

SungWoo Kahng

Member at Large (2015-2018)

SungWoo Kahng is an associate professor in the Department of Health Psychology at the University of Missouri and the Director of the Applied Behavioral Intervention Service of the MU Thompson Center for Autism and Neurodevelopmental Disorders. He was previously on the a faculty member in the Department of Behavioral Psychology and a senior behavior analyst on the Neurobehavioral Unit at the Kennedy Krieger Institute as well as an associate professor in the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine. Dr. Kahng graduated from Kalamazoo College with a bachelor’s of arts in psychology. He continued his education in psychology at the University of Florida where he received a master’s of science degree in 1996 and a doctorate in 1999. He is currently on the board of editors of the Journal of Applied Behavior Analysis and Behavioral Interventions. Additionally, he is a Board Certified Behavior Analyst and a Licensed Behavior Analyst in the State of Missouri. Dr. Kahng is the recipient of the 2003 B.F. Skinner New Researcher Award given by Division 25 of the American Psychological Association. He has been invited to present at regional, national, and international events, as well as to consult for numerous organizations. Dr. Kahng has co-authored over 50 peer reviewed articles and chapters. The focus of his research and clinical work has been on assessing and treating problem behaviors exhibited by individuals with developmental disabilities. He is also interested in a broader research agenda, which includes topics related to obesity and aging.

John Guercio

John Guercio

Member at Large (2017-2020)

Dr. John Guercio has spent much of his career researching effective staff training protocols and behavior intervention strategies for staff and clients in settings where severe aggression is present. Since obtaining his master’s and doctoral degrees in behavior analysis and therapy from Southern Illinois University at Carbondale, Dr. Guercio has worked in settings serving as Director of Behavioral Services for the Missouri Department of Mental Health, and as Vice President of Clinical Services and Research at the Judevine Center for Autism/TouchPoint Autism Services in St. Louis. He also serves as adjunct faculty in the behavior analysis department at Washington University, St. Louis University and Central Missouri University. He has also given more than 100 presentations at behavioral conferences and authored and/or co-authored over 50 articles in peer reviewed journals as well as written several book chapters related to the treatment of intensive behavioral issues. Dr. Guercio serves on the Board of Editors of Behavior Analysis Research and Practice and a guest reviewer for the Journal of Applied Behavior Analysis. In his career, Dr. Guercio has helped design and run a program for individuals with sexually deviant behavior and substance abuse issues and has developed an entire treatment protocol based upon that program.  In his current role at Benchmark Human Services, Dr. Guercio serves as the Clinical Director. He develops and delivers behavioral services for clients with significant aggression and high risk behavioral needs, many of whom have been institutionalized for more than 15 years, often under restraints and heavy medication. Through Dr. Guercio’s leadership, many clients’ medication dosages have decreased and, they have developed positive compensatory behaviors and are being integrated into the community. Dr. Guercio currently serves as the Coordinator for the Practice Track of the annual ABAI conference and is a board member of the Illinois Association for Behavior Analysis.

Nicole Schroeder

Nicole Schroeder

Student Representative (2017-2019)

Nicole Schroeder is a current graduate certificate student at the University of Kansas. Nicole received her undergraduate degrees from Northwest Missouri State in elementary education and cross categorical special education. While attending Northwest, She was introduced to ABA through a family who was involved on her special Olympics team. While at Northwest, she did three years of ABA therapy in home and decided to expand horizons and try center based therapy. Upon graduation, she moved to Columbia, Missouri to work at the Thompson Center for Autism and Neurodevelopmental Disabilities in the ABIS division, working primarily in EIBI. Nicole graduated with her masters from the University of Missouri  in Special Education: Autism Emphasis. While working on her masters, she did research on Pivotal Response Training in the school setting as well as looking at types of therapies, both evidence based and non-evidence based, that are commonly utilized in the school special education school setting. Following her work at the Thompson Center, she moved to Kansas City, Missouri to start her work at the company in which she is currently employed, Autism Support Now. At Autism Support Now, she is currently the Lead Registered Behavior Technician as well as the Client Coordinator. Nicole plans to sit for her boards to become a BCBA in early 2019. Nicole’s research interests include expanding the use of Pivotal Response Training in public schools through paraprofessionals, expanding opportunities for ABA specific professional development in schools, enhancing in home parent trainings through Behavioral Skills Training and establishing social skills groups through sports teams.

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