an older diagnostic and classification category applying to those with IQs of 35 to 49, comprising about 10% of people with mental retardation. These individuals rarely progress beyond the second grade in academic subjects. Although often poorly coordinated, they can learn to take care of themselves and to develop sufficient social and occupational skills to be able to perform unskilled or semiskilled work under supervision in sheltered and supportive environments, as well as in regular workplaces where accommodations are made.