Roosevelt Arthur Williams v. State of Arizona, 303 P.3d 532

Background

Roosevelt Williams challenges a respondent judge's ruling denying death-penalty relief by finding no clear and convincing evidence of intellectual disability under § 13-753.
Arizona law defines intellectual disability as significantly sub-average intellectual functioning with adaptive-behavior impairment, onset before age eighteen, and IQ of 70 or below with test margin considerations.
Three experts (Sullivan for defense; Weinstein and Martinez for defense and state) evaluated Williams; current full-scale IQs were 68 and 70, with discussion of possible higher adolescent IQs and causation factors like prenatal insult, abuse, and substance exposure.
The trial court found Williams lacked proof that adaptive impairment existed before eighteen and that onset occurred before eighteen, despite some evidence of current impairment and adaptive-behavior discussion.
Arizona’s statute, Atkins, Grell decisions, and DSM-AAIDD definitions frame the analysis; the panel ultimately held the statutory approach complied with Atkins and denied relief, while a dissent argued the statutory approach deviates from clinical standards and undermines Atkins.
The majority reaffirmed deference to factual and weight determinations of the trial judge and concluded Williams failed to prove mental retardation by clear and convincing evidence under the statutory framework.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Did Williams prove intellectual disability by clear and convincing evidence before age eighteen?	Williams asserts evidence shows pre-18 onset.	State argues current impairment may not prove pre-18 onset; adaptive deficits not clearly shown before eighteen.	No clear and convincing proof of pre-18 onset.
Was the adaptive-behavior standard in § 13-753(K) consistent with Atkins and clinical definitions?	Williams' adaptive deficits align with DSM-AAIDD criteria.	Arizona's broad adaptive-functioning standard is acceptable and conforms to Atkins.	Statutory standard generally conforms to Atkins; no reversible error found.
May retrospective evidence (interviews about pre-18 life) establish onset before eighteen under the statute?	Weinstein's retrospective history should be persuasive for pre-18 onset.	The court properly found Weinstein's retrospective history unreliable.	Court did not clearly err in rejecting retrospective onset evidence.
Did the Atkins framework permit states to define mental retardation differently from clinical standards?	Arizona's statute deviates but remains within Atkins' enforcement flexibility.	States may generally conform to clinical standards; substantial conformity required.	Majority held states may implement non-identical but generally conform definitions; relief denied.
Should Williams' case be remanded for a new Atkins determination under a different standard?	Distortion of clinical standards warrants reconsideration.	No remand; record supports the court's resolution under § 13-753.	No remand; denial of relief affirmed.

Key Cases Cited

Atkins v. Virginia, 536 U.S. 304 (U.S. 2002) (Eighth Amendment prohibits execution of intellectually disabled)
Grell II, 212 Ariz. 516 (Ariz. 2006) (statutory adaptive-behavior standard; deference to trial court; not clearly erroneous)
Grell I, 205 Ariz. 57 (Ariz. 2003) (Arizona's pre-Atkins framework; procedural guidance)
Grell III, 231 Ariz. 153 (Ariz. 2013) (independent review of death sentence for mental retardation)
Arellano, 213 Ariz. 474 (Ariz. 2006) (pre-age-eighteen IQ tests not always available; use indirect evidence)
Moormann v. Schriro, 672 F.3d 644 (9th Cir. 2012) (course of proof for pre-18 onset under Arizona statute)
Roque, 213 Ariz. 193 (Ariz. 2006) (national consensus; state's definitional latitude)
Pruitt v. State, 834 N.E.2d 90 (Ind. 2005) (majority clinical-definitions standard as baseline)