Need for Stability and Predictability in Terminology in Times of Change and Challenges.

This article provides solutions to reduce terminology-related confusion and inconsistencies in the field of intellectual and developmental disabilities. Solutions involve distinguishing between a disability and a disorder, using the consensus definitions of intellectual disability and developmental disability; recognizing the important distinction among different types of definitions; differentiating the constructs of intellectual disability and developmental disability; not combining the terms intellectual disability and developmental disability into a new diagnostic term; and using appropriate initials to denote the respective condition. Solutions are based on information obtained from three sources: current diagnostic manuals, disability-related public laws and administrative rules and regulations of federal agencies with jurisdiction regarding people with a disability, and relevant published literature.