Justices to consider how to determine if a person is "intellectually disabled." ...

The U.S. Supreme Court Wednesday will consider an Alabama case about how states decide if a death penalty candidate is ...

The Supreme Court grappled on Wednesday with how courts consider multiple intelligence quotient tests when evaluating if a ...

Seth P. Waxman, Smith’s lawyer, told the justices that the lower federal courts in his client’s case correctly applied ...

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

In Hamm v. Smith, the Supreme Court will consider how IQ tests can be used to determine when an individual with an ...

The arguments and assertions in this case are all over the map and very hard to follow,” Justice Ketanji Brown Jackson ...

In 2002, the Supreme Court ruled in Atkins v. Virginia that the Constitution’s ban on cruel and unusual punishment bars the execution of people who are intellectually disabled. Next week, […] The post ...

Psychologists administer IQ tests. Some psychologists don't test children younger than 4. Costs for testing can vary by the provider. Isla McNabb, a 2-year-old from Kentucky recently became the ...

American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.