Atkins v. Virginia
Citation
536 U.S. 304 (2002). Supreme Court of the United States.
Facts
Daryl Atkins, who had an IQ of 59 and was diagnosed with mild intellectual disability, was convicted of capital murder in Virginia and sentenced to death. He argued that executing a person with intellectual disability violated the Eighth Amendment’s prohibition on cruel and unusual punishment.
Issue
Does the Eighth Amendment prohibit the execution of individuals with intellectual disabilities?
Holding
The Court held that the execution of intellectually disabled persons constitutes cruel and unusual punishment under the Eighth Amendment. The decision overruled Penry v. Lynaugh (1989), which had permitted such executions.
Rule / Doctrine
The Eighth Amendment’s meaning evolves with the “evolving standards of decency that mark the progress of a maturing society.” Evidence of a national consensus against executing the intellectually disabled — reflected in a significant number of state legislative enactments — informed the Court’s conclusion. The Court further reasoned that intellectually disabled persons have diminished culpability, reduced deterrability, and heightened risk of wrongful conviction, making death a disproportionate punishment.
Significance
Atkins is a landmark in Eighth Amendment jurisprudence, establishing that categorical exemptions from capital punishment can be constitutionally required based on diminished culpability. It set the framework later applied in Roper v. Simmons (juveniles) and Hall v. Florida (defining intellectual disability). The case left states to define “intellectual disability,” generating ongoing litigation.