(a) As used in this section, “intellectual disability” means:

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Terms Used In Tennessee Code 39-13-203

  • Appeal: A request made after a trial, asking another court (usually the court of appeals) to decide whether the trial was conducted properly. To make such a request is "to appeal" or "to take an appeal." One who appeals is called the appellant.
  • Appellate: About appeals; an appellate court has the power to review the judgement of another lower court or tribunal.
  • Conviction: A judgement of guilt against a criminal defendant.
  • Defendant: means a person accused of an offense under this title and includes any person who aids or abets the commission of such offense. See Tennessee Code 39-11-106
  • Defendant: In a civil suit, the person complained against; in a criminal case, the person accused of the crime.
  • Evidence: Information presented in testimony or in documents that is used to persuade the fact finder (judge or jury) to decide the case for one side or the other.
  • Person: includes the singular and the plural and means and includes any individual, firm, partnership, copartnership, association, corporation, governmental subdivision or agency, or other organization or other legal entity, or any agent or servant thereof. See Tennessee Code 39-11-106
  • State: when applied to the different parts of the United States, includes the District of Columbia and the several territories of the United States. See Tennessee Code 1-3-105
  • Trial: A hearing that takes place when the defendant pleads "not guilty" and witnesses are required to come to court to give evidence.
(1) Significantly subaverage general intellectual functioning;
(2) Deficits in adaptive behavior; and
(3) The intellectual disability must have manifested during the developmental period, or by eighteen (18) years of age.
(b) Notwithstanding any law to the contrary, no defendant with intellectual disability at the time of committing first degree murder shall be sentenced to death.
(c) The burden of production and persuasion to demonstrate intellectual disability by a preponderance of the evidence is upon the defendant. The determination of whether the defendant had intellectual disability at the time of the offense of first degree murder shall be made by the court.
(d) If the court determines that the defendant was a person with intellectual disability at the time of the offense, and if the trier of fact finds the defendant guilty of first degree murder, and if the district attorney general has filed notice of intention to ask for the sentence of imprisonment for life without possibility of parole as provided in § 39-13-208(b), the jury shall fix the punishment in a separate sentencing proceeding to determine whether the defendant shall be sentenced to imprisonment for life without possibility of parole or imprisonment for life. Section 39-13-207 shall govern the sentencing proceeding.
(e) If the issue of intellectual disability is raised at trial and the court determines that the defendant is not a person with intellectual disability, the defendant shall be entitled to offer evidence to the trier of fact of diminished intellectual capacity as a mitigating circumstance pursuant to § 39-13-204(j)(8).
(f) The determination by the trier of fact that the defendant does not have intellectual disability shall not be appealable by interlocutory appeal, but may be a basis of appeal by either the state or defendant following the sentencing stage of the trial.
(g)

(1) A defendant who has been sentenced to the death penalty prior to May 11, 2021, and whose conviction is final on direct review may petition the trial court for a determination of whether the defendant is intellectually disabled. The motion must set forth a colorable claim that the defendant is ineligible for the death penalty due to intellectual disability. Either party may appeal the trial court’s decision in accordance with Rule 3 of the Tennessee Rules of Appellate Procedure.
(2) A defendant shall not file a motion under subdivision (g)(1) if the issue of whether the defendant has an intellectual disability has been previously adjudicated on the merits.