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Intellectual disability (formerly called mental retardation) is a decreased ability to think and learn. It's caused by a problem with how the brain works.
The diagnosis is based on intelligence quotient (IQ) tests and a child's learning problems.
The disability can range from mild to severe. People who have intellectual disability may have a hard time with:
Online Medical Reviewer:
Susan C. Kim, MD - Pediatrics & Fred Volkmar, MD - Child and Adolescent Psychiat
Date Last Reviewed: