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 ...

Almost 1,500 genes have been implicated in intellectual disabilities; yet for most people with such disabilities, genetic causes remain unknown. Perhaps this is in part because geneticists have been ...

Scientists have uncovered a rare genetic cause of intellectual disability in a historically overlooked part of the human genome: so-called junk DNA. This knowledge could someday help to diagnose some ...

The U.S. Supreme Court is set to hear arguments in a case that advocates say could have major implications for how intellectual disability is defined. The high court will consider Hamm v. Smith on ...