The American Association on Intellectual and Developmental Disabilities (AAIDD) is an American non-profit organization focusing on intellectual disability and related developmental disabilities. AAIDD has members in the United States and more than 50 other countries. History The AAIDD was founded in 1876 by Édouard Séguin, and is the oldest professional association concerned with intellectual and developmental disabilities. AAIDD advocates for the equality, dignity, and human rights of people with intellectual and developmental disabilities, and for their full inclusion and participation in society. It is headquartered in Silver Spring, Maryland, a suburb of Washington DC. The name of the association has changed five times in its history, reflecting the changes in thinking about the condition known today as intellectual disability: 1876: Association of Medical Officers of American Institutions for Idiotic and Feebleminded Persons 1906: American Association for the Study of the Feebleminded 1933: American Association on Mental Deficiency 1987: American Association on Mental Retardation 2007: American Association on Intellectual and Developmental Disabilities Mission and goals The AAIDD's stated mission is to promote progressive policies, sound research, effective practices, and universal human rights for people with intellectual and developmental disabilities. The association's goals are to: Enhance the capacity of professionals who work with individuals with intellectual and developmental disabilities. Promote the development of a society that fully includes individuals with intellectual and developmental disabilities. Sustain an effective, responsive, well managed, and responsibly-governed organization. It also has various sub-groups with more specific interests, such as the Religion and Spirituality Interest Network, "an interfaith, interdisciplinary association of professional ordained and lay people who journey with persons with developmental disabilities and their families." Publications The AAIDD publishes books, evidenced-based assessment tools, and three peer-reviewed journals. Journals The AAIDD encourages a diversity of contributions from different traditions of inquiry and disciplines; all papers must meet the journals' criteria for rigor and peer review to be considered for publication. Established in 1896, American Journal on Intellectual and Developmental Disabilities (AJIDD) is a multidisciplinary journal for reporting original contributions of the highest quality on intellectual disability, its causes, treatment, and prevention. Like its parent organization, the journal has had multiple names through its history. It began as simply the journal of the proceedings and addresses from the association's annual conference, published under the corresponding name of the association. In 1939, it expanded beyond the annual conference report and became known as American Journal of Mental Deficiency. From 1987