W. Va. Code § 27-1-3: Intellectual disability.

"Intellectual disability" means significantly subaverage intellectual functioning which manifests itself in a person during his or her developmental period and which is characterized by his or her inadequacy in adaptive behavior. Notwithstanding any provision to the contrary, if any service provision or reimbursement is affected by the changes in terminology adopted in the 2010 First Extraordinary Session of the Legislature, the terms "intellectual disability" or "individuals with an intellectual disability" shall assume their previous terminology. It is not the intent of the Legislature to expand the class of individuals affected by this terminology change.