The senior author (senior in more than one sense) was given cause to reflect on the meaning of the term mental retardation when he received his 30-year certificate and pin for continuous membership in the American Association on Mental Retardation in 2005. When he became a member of the organization in 1975 as a doctoral student at Columbia University, it was the American Association on Mental Deficiency that he joined. Although the focus of his studies at Columbia was mental retardation and even though that term had been the accepted terminology in the field for many years, the primary organization for students, professionals, scholars, and advocates in mental retardation still used the term mental deficiency in its moniker. This remained the case for the first 10 years of his membership. He is now a member, of course, of the American Association on...

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