Intellectual & Developmental Disability: Websites American Association on Intellectual and Developmental Disabilities (AAIDD) http://www.aamr.org/ promotes progressive policies, sound research, effective practices, and universal human rights for people with intellectual disabilities. The Arc of the United States www.thearc.org works to include all children and adults with cognitive, intellectual, and developmental disabilities in every community. Best Buddies www.bestbuddies.org is a non-profit organization dedicated to enhancing the lives of people with intellectual disabilities by providing opportunities for one-to-one friendships and integrated employment. The Mental Retardation Research Center at UCLA http://www.mrrc.npi.ucla.edu/iddrc/home.aspx Conducts research into core causes of mental retardation and communicates research discoveries to clinicians, patients, and family members. Centers for Disease Control and Prevention (CDC) www.cdc.gov/ncbddd/ Provides information about intellectual disability/mental retardation, including causes, prevention, resources, and more. Down Syndrome Association of Los Angeles http://www.dsala.org/ Information for people with Down Syndrome and their families