(625 ILCS 5/1-131.7) (This Section may contain text from a Public Act with a delayed effective date) Sec. 1-131.7. Intellectual disability. A disability, originating before the age of 18 years, characterized concurrently by (i) significant subaverage intellectual functioning as demonstrated by performance on a standardized measure of intellectual functioning, administered in conformity with accepted professional practice, that is at least 2 standard deviations below the mean and (ii) significant limitations in adaptive behavior as expressed in conceptual, social, and practical adaptive skills.
(Source: P.A. 104-840, eff. 7-1-27.)