Dr. David Stein is a pediatric psychologist within the Division of Developmental Medicine at Boston Children's and an instructor at Harvard Medical School. He is the Co-Director of the Down Syndrome Program at Boston Children’s Hospital. Dr. Stein is also a faculty member of the Leadership Education in Neurodevelopmental and Related Disorders (LEND) fellowship at Boston Children's. His clinical work is focused on neuropsychological testing and behavior therapy with children who have neurodevelopmental disorders. Dr. Stein's research is focused on accurate phenotyping of complex and comorbid neurodevelopmental conditions, factors affecting long-term outcomes, and quality improvement. Dr. Stein completed his bachelor's degree with high honors at Tufts University, majoring in Clinical Psychology with a Child Development concentration. Dr. Stein completed his doctoral coursework at William James College (formerly MSPP), his internship at Harvard Medical School/The Cambridge Hospital, and his post-doctoral fellowship at Boston Children's Hospital.