Research Faculty

Bethea, Terrence Carter

Terrence Carter Bethea







B.S.: Public Health: University of North Carolina at Chapel Hill
M.A.: University of North Carolina at Chapel Hill
M.D.: University of North Carolina at Chapel Hill
Resident Psychiatry: University of North Carolina at Chapel Hill

Terrence Carter Bethea, MD (also known as TC) is currently a child psychiatry research associate in the Division of Child and Adolescent Psychiatry at The University of North Carolina at Chapel Hill. He was born and raised in North Carolina. He studied public health/nutrition during his undergraduate studies and then went on to medical school, both at UNC-Chapel Hill. Dr. Bethea has completed a Research Fellowship at UNC’s Neurodevelopmental Disorders Research Center under the supervision of Drs. Richard, Mailman and Lin Sikich, followed by a clinical fellowship with the ASPIRE Research Program in the Division of Child and Adolescent Psychiatry at UNC. His research is focused on the treatment of children and adolescents with neurodevelopmental disorders including autism, Fragile X, schizophrenia and bipolar disorder. His studies also include interventions to mitigate metabolic side effects of antipsychotics. Currently not accepting new patients.

Chandrasekhar, Tara








B.S.: Washington University in St. Louis
M.D.: University of Missouri-Columbia
General Psychiatry Residency: University of North Carolina at Chapel Hill
Child and Adolescent Psychiatry Fellowship: University of North Carolina at Chapel Hill

Tara Chandrasekhar is a Child and Adolescent psychiatrist who completed her fellowship at UNC in 2013. She worked with ASPIRE throughout her fellowship training and looks forward to continuing her research as a faculty member. She completed her residency in General Psychiatry in 2012.  She is excited to learn more about novel treatments for deficits in autism, schizophrenia, mood disorders and depression.

Dichter, Gabriel

Gabriel Dichter Photo

Gabriel Dichter, PhD has joint faculty appointments at UNC Chapel Hill and Duke University. Dr. Dichter is the director of the Clinical Affective Neurosciences Laboratory (CAN) at Duke. The CAN Laboratory is dedicated to the use of neuroscience methods to better understand, detect, treat, and prevent psychiatric disorders. Research methods include psychophysiology, functional MRI, eye-tracking, and behavioral approaches. The CAN strategy is to first validate methods in non-clinical contexts, then to apply our paradigms in acute psychiatric conditions, and finally to test our assays as potential biomarkers of treatment response. CAN’s primary focus is on autism spectrum disorders and unipolar major depressive disorder. Dr. Dichter and Dr. Sikich work together on an MRI research study evaluating the efficacy of aripiprazole (Abilify®) in autism spectrum disorders.

Hazzard, Lindsey

Lindsey Hazzard


Contact Information
Phone: (919) 972-7440
Fax: (919) 493-8985



B.S., Social Work: Spring Arbor University (2004)
MSW, Social Work: Indiana University (2006)

Lindsey Hazzard is an outreach coordinator-clinical social worker at UNC and is particularly interested in assessment of childhood disorders. She has been in clinical research for 8 years. Lindsey is very involved with many of our clinical assessments including diagnostic assessments such as the Autism Diagnostic Interview-Revised (ADI-R), Autism Diagnostic Observation Schedule (ADOS) and Kiddie Schedule of Affective Disorders and Schizophrenia for School-Aged Children (KSADS). Lindsey has held a position as an examination writer for the Association of Social Work Boards since 2013. Outside of work she enjoys spending time with her husband and daughter, Juliana.

Horrigan, Joseph

Joe Horrigan Cropped



Sc. B.: Psychology: Brown University
M.D.: University of Rochester
General Psychiatry Residency: University of North Carolina at Chapel Hill
Child Psychiatry Fellowship: University of North Carolina at Chapel Hill
Pediatric Neuropsychiatry Fellowship: University of North Carolina at Chapel Hill

Dr. Horrigan is a Clinical Associate Professor at UNC. His professional areas of interest include autism spectrum disorders, neurodevelopmental disorders due to genetic causes, developmental neuropharmacology, Tourette syndrome, ADHD and learning disabilities. Previously, Dr. Horrigan served as Assistant Vice President and Head of Medical Research for Autism Speaks, the largest science and advocacy organization in the U.S. devoted to autism spectrum disorders (ASD). He also worked for approximately 10 years at GlaxoSmithKline, where he was a Senior Director in the Neurosciences Medicines Development Center. In that capacity he played a lead role in the development and execution of Phase II-IV pediatric programs across several therapeutic areas. Currently not accepting new patients.

Sikich, Lin

Lin Sikich






B.A.: English: Washington University
M.A.: Neurobiology: Washington University
M.D.: Washington University
Resident Psychiatry: Yale University

Dr. Sikich is an associate professor at UNC and has become interested in early onset psychotic illnesses. Previously, during her child psychiatry research training fellowship at Yale Child Study Center she focused upon autism spectrum disorders. Today, the majority of her work is focused on evaluating and developing treatments for severe neurodevelopmental disorders such as autism and schizophrenia using standard efficacy measures, effectiveness measures that also consider the tolerability and acceptability of treatments, and neurocognitive outcomes. She is interested in genetic factors that may influence treatment response. Her research on treatments for autism, bipolar disorder, Fragile X Syndrome and schizophrenia spectrum disorders in children and adolescents is funded by the National Institutes of Mental Health. Currently not accepting new patients.

Tinney-Railey, Qionna

 Qionna Tinney-Railey


B.S.: Wake Forest University, Winston-Salem, NC
M.D.: University of North Carolina at Chapel Hill
General Psychiatry Residency: University of North Carolina at Chapel Hill
Child and Adolescent Psychiatry Fellowship: University of North Carolina at Chapel Hill

Dr. Tinney Railey is a native of Virginia but completed her undergraduate and medical studies in North Carolina.  Since completing her General Psychiatry Residency and Child & Adolescent Fellowship at UNC, she has worked in a variety of outpatient settings in Chapel Hill, Durham, and Raleigh. Currently she serves as a Medical Director for a community mental health agency, conducts research with Autism Spectrum Disorders, provides outpatient treatments/consults, and works as a national liaison in Graduate Medical Education. Her previous research focused on the subtypes of Pediatric Bipolar Disorder and associated comorbidities. Dr. Tinney Railey’s goal is to promote awareness and tolerance of mental health in the community while providing excellent patient care.