Recent discussions about changing the term mental retardation to a differen
t term may be considered in the broader framework of three distinct but rel
ated processes: naming (terminology), defining, and classifying. The three
processes are analyzed according to their purposes and functions: In naming
, a term is assigned; in defining, the term is explained; and in classifyin
g, the group is divided into subgroups according to stated principles. The
current status of each process is described, especially as represented in t
he 1992 AAMR manual, Mental Retardation: Definition, Classification, and Sy
stems of Supports. We suggest three sets of guiding questions that may help
evaluate proposed changes in naming, defining, or classifying.