Death penalty: person with an intellectual disability.

Existing law authorizes a defendant to apply, prior to the commencement of trial, for an order directing that a hearing to determine intellectual disability be conducted when the prosecution in a criminal case seeks the death penalty. Existing law requires the court to order a hearing to determine whether the defendant has an intellectual disability upon the submission of a declaration by a qualified expert stating the expert's opinion that the defendant is a person with an intellectual disability. Existing law defines "intellectual disability" for these purposes as a condition of significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested before 18 years of age. This bill would change the definition of "intellectual disability" to include conditions that manifest before the end of the developmental period, as defined by clinical standards. The bill would also prohibit the results of a test measuring intellectual functioning to be changed or adjusted based on race, ethnicity, national origin, or socioeconomic status. The bill would require the court to order a hearing to determine whether the defendant is a person with an intellectual disability upon a prima facie showing, as defined, that the defendant is a person with an intellectual disability. The bill would authorize a person in custody pursuant to a judgment of death to apply for an order directing that a hearing to determine intellectual disability be conducted as part of a petition for a writ of habeas corpus and would specify the procedure for making the determination as to whether the defendant is a person with an intellectual disability.