what disabilities are intellectual disabilities
See also: Developmental disability. Intellectual disability (ID), also called intellectual development disorder (IDD) or general learning disability, and formerly known as mental retardation (MR), is a generalized neurodevelopmental disorder characterized by significantly impaired intellectual and adaptive functioning.5â90% of the affected people have mild intellectual disability. Non-syndromic or idiopathic cases accounts for 30â50% of cases. About a quarter of cases are caused by a genetic disorder.