The American Journal on Intellectual and Developmental Disabilities (AJIDD) is consistently among the top three journals in the special education and rehabilitation fields according to the impact factor rankings. The AJIDD reports current and critical research in biological, behavioral, and educational sciences. It is a singular, multidisciplinary resource in the causes, treatment, and prevention of intellectual disability. The premier journal in its field for more than 115 years, AJIDD is an essential reference and resource tool for doctoral and master's-level universities, research organizations, teaching hospitals, sciences and human services libraries, and local, state and federal agencies interested in understanding causes, prevention and treatment for intellectual disabilities.