IL SB3821

Amends Section 2-10.1 of the Criminal Code of 1961 to modify the definition of "severely or profoundly intellectually disabled person"

Changes the definition so that a person with an intelligence quotient not exceeding 55 must also suffer from significant mental illness that impairs rational judgment (replaces "and" with "and" in grammatical structure)

Applies to criminal proceedings involving charges of specific crimes (including sexual abuse, criminal sexual assault, and other designated offenses) where the victim is alleged to be severely or profoundly intellectually disabled

Makes court findings regarding a victim's status as severely or profoundly intellectually disabled, made during judicial admission hearings under the Mental Health and Developmental Disabilities Code, admissible as evidence in criminal proceedings