Autism & Developmental Disorders Inpatient Research Collaborative (ADDIRC)

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Autism & Developmental Disorders Inpatient Research Collaborative (ADDIRC)2018-10-29T10:08:44+00:00

The Autism & Developmental Disorders Inpatient Research Collaborative (ADDIRC) is a research platform of specialized child psychiatry hospital units that serve children and adolescents with autism and developmental disorders.

Each year, more than 1,000 children and adolescents with autism and serious behavioral disturbance are admitted to the five specialized psychiatric hospital units that comprise the network. The patient population is heavily weighted toward individuals severely affected by autism. The goal is to develop a comprehensive registry of clinical and biological data on severely affected children and adolescents with autism. We are investigating the dimensions of expressive language ability, emotional regulation, psychiatric co-morbidity, aggression, self-injurious behavior and intelligence, and the relationships among these critical factors.

RESEARCH PROGRAM: For more information about this research program, contact Mary Verdi, Program Manager or (207) 661-7608

TREATMENT OPTIONS: If you are looking for information about possible treatment options for your child, please click on the “Network Sites” tab below and click on the hospital to learn more about the specialized hospital unit

For more information about our participating centers, please see the Network Sites tab below.

Individuals severely affected by an autism spectrum disorder, particularly those with intellectual disability, significant expressive language impairments or self-injurious behavior, have been understudied. Up to 50 percent of children with autism fail to develop functional language, 30 to 50 percent have intellectual disability, and up to 55 percent have a lifetime incidence of self-injurious behavior.

Adequate phenotypic and biological data from severely affected individuals are lacking. This gap in our knowledge is particularly striking given that communicative and cognitive abilities are the best predictors of long-term outcomes in children with autism. Barriers to studying severely affected children include challenges in their recruitment and participation in outpatient research studies, limited contact of most investigators with this population, and a relative lack of validated measures for characterizing these individuals.

The Autism Inpatient Collection (AIC) phenotypic database and biorepository is supported by a grant from the Simons Foundation Autism Research Initiative and the Nancy Lurie Marks Family Foundation, (SFARI #296318 to M.S.)

Watch the Video to Learn More

Center for Psychiatric Research


Children’s Hospital Colorado
Neuropsychiatric Special Care Unit
13123 East 16th Avenue
Aurora, CO 80045
(720) 777-1234
(800) 624-6553

  • Robin Gabriels, PsyD – Program Director
  • Carol Beresford, MD – Medical Director
  • Briar DeChant – Research Assistant


Cincinnati Children’s Hospital Medical Center
Division of Child and Adolescent Psychiatry
3333 Burnet Avenue
Cincinnati, OH 45229
(513) 636-4124

  • Logan Wink, MD – Medical Director
  • Craig Ericson, MD – Director of Disability Services in Psychiatry
  • Adam Klever, BS – Research Assistant


Spring Harbor Hospital
Developmental Disorders Program
123 Andover Road
Westbrook, ME 04092
(207) 761-6644
(866) 857-6644

  • Matthew Siegel, MD – Director
  • Susan Santangelo, ScD – Co-Principal investigator/ Director, Center for Psychiatric Research
  • Kahsi Pedersen, PhD – Senior Statistician
  • Mary Verdi, MA – Project Manager
  • Deanna Williams, BA – Data Coordinator
  • Christine Peura, BA – Research Assistant
  • Amy Stedman, BS – Research Assistant
  • Cathy Small, PhD, BCBA-D – Clinical Psychologist
  • Kelly McGuire, MD – Child Psychiatrist
  • Tamara Palka, MD – Child Psychiatrist


Western Psychiatric Institute and Clinic of UPMC
Center for Autism and Developmental Disorders, Merck Inpatient
3811 O’Hara Street
Pittsburgh, PA 15213
(412) 624-1000

  • Martin Lubetsky, MD – Chief, Child & Adolescent Psychiatry, Autism Services
  • Joseph Pierri, MD – Medical Director
  • Carla Mazefsky, PhD – Research Project Director
  • Benjamin Handen, PhD – ATN & Autism Research Director
  • John McGonigle, PhD – Western Pennsylvania Regional Autism Center Director
  • Holly Gastgeb, PhD – Research Associate
  • Kristen MacKenzie – Research Assistant
  • Jessica Vezzoli, BS – Research Assistant
  • Joshua Montrenes, BS – Research Assistant


Sheppard Pratt Health System
Child and Adolescent Neuropsychiatry Unit – Towson
6501 N. Charles Street
Baltimore, MD
(410) 938-3700

  • Rajneesh Mahajan, MD – Service Chief
  • Nicole Stuckey, MSN, RN – Unit Manager
  • Tom Flis, MS – Behavior Specialist
  • Angela Geer, BS – Research Assistant
  • Brittany Troen, BS – Research Assistant

Rhode Island

Bradley Hospital

Center for Autism and Developmental Disabilities
1011 Veterans Memorial Parkway
East Providence, RI 02915
(401) 432-1189
  • Giulia Righi, PhD – Co-Investigator
  • Eric Morrow, MD, PhD – Director, Developmental Disorders Genetics Research Program
  • Barbara Tylenda, PhD, ABPP – Chief Psychologist, CADD
  • Margaret Klitzke, DO – Child Psychiatrist
  • Carrie Best, MA – Research Coordinator
  • Jill Benevides, BS – Research Assistant

Scientific Advisory Group

  • Connie Kasari, PhD – UCLA
  • Bryan King, MD – University of Washington
  • James McCracken, MD – UCLA
  • Christopher McDougle, MD – Harvard University
  • Larry Scahill, PhD, MSN – Emory University
  • Robert Schultz, PhD – University of Pennsylvania
  • Helen Tager-Flusberg, PhD – Boston University

Coordinating Site Advisory Group

  • Don St. Germain, MD – VP Research, Maine Medical Center/ Director, Maine Medical Center Research Institute
  • Girard Robinson, MD – VP Medical Affairs, Spring Harbor Hospital
  • Robert Kramer, MD – Maine Medical Center


• Siegel M, Smith KA, Mazefsky C, Gabriels RL, Erickson C, Kaplan D, Morrow EM, Wink L, Santangelo SL; The autism inpatient collection: methods and preliminary sample description; Autism and Developmental Disorders Inpatient Research Collaborative (ADDIRC). Mol Autism. 2015 Nov 10;6:61. doi: 10.1186/s13229-015-0054-8. eCollection 2015 [PubMed]

• McGuire K, Erickson C, Gabriels RL, Kaplan D, Mazefsky C, McGonigle J, Meservy J, Pedapati E, Pierri J, Wink L, Siegel M. Psychiatric Hospitalization of Children With Autism or Intellectual Disability: Consensus Statements on Best Practices. J Am Acad Child Adolesc Psychiatry. 2015 Dec;54(12):969-71. doi: 10.1016/j.jaac.2015.08.017. [PubMed]

•Siegel M, Milligan B, Chemelski B, Payne D, Ellsworth B, Harmon J, Teer O, Smith, KA.  Specialized Inpatient Psychiatry for Serious Behavioral Disturbance in Autism and Intellectual Disability.  J Autism Dev Disord 2014 DOI 10.1007/s10803-014-2157-z [Article]

• Siegel M, Beresford CA, Bunker M, Verdi M, Vishnevetsky D, Karlsson C, Teer O, Stedman A, Smith KA.  Preliminary Investigation of Lithium for Mood Disorder Symptoms in Children and Adolescents with Autism Spectrum Disorder.  J Child Adolesc Psychopharmacol. 2014 Aug 5. [Epub ahead of print] PMID: 25093602 [Article]

• Volkmar F, Siegel M, Woodbury-Smith M, King B, McCracken J, State M, and the American Academy of Child and Adolescent Psychiatry (AACAP) Committee on Quality Issues (CQI).  Practice Parameter for the Assessment and Treatment of Children and Adolescents With Autism Spectrum Disorder [Article]

• Siegel, M and Gabriels, R.L. Psychiatric hospital treatment of children with autism and serious behavioral disturbance. Child and Adolescent Psychiatric Clinics of North America 2014;23(1);125-142. [Article]

• Gabriels RL, Agnew JA, Beresford C, Morrow MA, Mesibov G, Wamboldt M. Improving psychiatric hospital care for pediatric patients with autism spectrum disorders and intellectual disabilities. Autism Res Treat. 2012;2012:685053. doi: 10.1155/2012/685053. Epub 2012 Jun 19. [PubMed]

• Siegel M, Doyle K, Chemelski B, Payne D, Ellsworth B, Harmon J, Robbins D, Milligan B, Lubetsky M. Specialized inpatient psychiatry units for children with autism and developmental disorders: a United States survey. J Autism Dev Disord. 2012 Sep;42(9):1863-9. doi: 10.1007/s10803-011-1426-3. [Article]

• Siegel, M. and King, B.H. Acute management of autism spectrum disorders. Child Adolescent Psychiatric Clinics of North America 2014;23-xii-xv.[ScienceDirect]

• Autism Spectrum Disorder (Pittsburgh Pocket Psychiatry) Martin J. Lubetsky (Editor), Benjamin L. Handen (Editor), John J. McGonigle (Editor) [Book]

• Mazefsky CA, Herrington J, Siegel M, Scarpa A, Maddox BB, Scahill L, White SW. The Role of Emotion Regulation in Autism Spectrum Disorder [Article]

Emotion regulation, physiologic arousal, and challenging behaviors:

Up to two-thirds of youth with Autism Spectrum Disorder (ASD) develop aggression. However, we know little about its course in ASD and the reasons for its emergence. Aggression in ASD often becomes so problematic that multiple medications are attempted, despite risk of adverse effects and inconsistent success. Aggression is particularly impairing and treatment refractory in the 30-40% of youth with ASD who are minimally verbal (MV-ASD). Their inability to self-report distress makes the appearance of aggression unpredictable and thus dangerous, which leads to their exclusion from foundational educational, social, and familial experiences. This predicament accelerates negative trajectories and increases health care costs.

Our aim in this exploratory pilot study is to reduce the impact of aggression by examining physiological biomarkers of the onset of aggression onset, and use measures of physiological arousal, emotion regulation, and inhibitory control to identify processes that underlie behavioral dysregulation.