- American Association on Intellectual and Developmental Disabilities (AAIDD) offers education, publications, policy briefs, newsletters, etc.
- B.R.A.I.N. – Brain Rehabilitation and Injury Network
- Intellectual and Developmental Disabilities is described by National Institute of Health.
- Intellectual and Developmental Disabilities Branch (IDDB) of the National Institute of Health (NIH). The mission of IDDB is to support a program of research in IDDs, including common and rare neuromuscular and neurodevelopmental disorders, such as Down, Fragile X, and Rett syndromes; inborn errors of metabolism; autism spectrum disorders; and conditions currently and soon-to-be detectable through newborn screening.