Emily Shea Tanis, PhD, is the Associate Director at the Coleman Institute for Cognitive Disabilities at the University of Colorado and on the faculty of the Department of Psychiatry at the University of Colorado Anschutz Medical Campus. She also serves as the research coordinator for the State of the States in Developmental Disabilities Project of National Significance funded by the Administration on Intellectual and Developmental Disabilities, which investigates the determinants of public spending for Intellectual and Developmental Disability Services in the United States and contributes to the project of Public Spending and Services for People with Disabilities examining cross-disability public spending in the United States. Tanis has been a co-author on The State of the States in Developmental Disabilities Monograph since 2011. Tanis is the sibling of a man with a traumatic brain injury and is past-chair of the National Sibling Leadership Network and co-founder of the Colorado Sibling Leadership Network Chapter. She has published articles on the definition of intellectual disability, the construct of self-determination, the impact of assistive technologies and cognitive accessibility, supports for families of people with intellectual and developmental disabilities, and supported and customized employment. She received her PhD from the University of Kansas, Department of Special Education, MA from Rhode Island College, and BA from Brown University in psychology.