Genetics in Medicine - Prevention of mental retardation: What do health professionals and general population know about this issue? Skip to main content Thank you for visiting nature.com.

A version of this article appeared in the October 06, 2010 edition of Education Week as ‘Intellectual Disability,” Not ‘Retardation’ ...

The definition of who has mental retardation iosn't precise; it's not like determing a person's blood type. Officially, anyone with an IQ of 70 or under is considered to have mental retardation.

Proving Mental Retardation In the 18 states with bans on executing convicted criminals who are mentally retarded, defining mental retardation can be a life and death issue. For Weekend Edition ...

Despite decades of research, mental retardation remains an amorphous concept defined not in black and white but in ever-changing shades of gray. As recently as 40 years ago, the condition was ...