Is an intellectual disability a condition, or a number on an IQ test? Here's why an Alabama death penalty case at the Supreme ...

U.S. Supreme Court Justices Clarence Thomas and Samuel Alito appeared inclined to side with the state of Alabama during ...

The case involves an Alabama man who challenged his death sentence after a murder conviction because of his varying results in a series of I.Q. tests.

The U.S. Supreme Court is considering whether to let Alabama execute convicted murderer Joseph Smith, whose IQ scores were within the standard error of measurement of intellectual disability.

Seth P. Waxman, Smith’s lawyer, told the justices that the lower federal courts in his client’s case correctly applied Alabama law, which allows judges to consider “evidence of intellectual ...

Decades ago, the Supreme Court said inmates who are intellectually disabled can't be executed. Now, it weighs the use of IQ tests in close calls.

Disability rights groups argue that a new guardianship law creates a two-tier system that strips people with intellectual ...

A new study is among the first to estimate the number of adults in the U.S. with intellectual disability, offering policymakers and other stakeholders a snapshot of the need for resources. Just shy of ...

What are intellectual and developmental disabilities? Intellectual disability is a disability characterized by significant limitations in both intellectual functioning and in adaptive behavior, which ...