50-69, mildly retarded

Educable, can learn to care for oneself, employable in routinized jobs but require supervision. Might live alone but do best in supervised settings. Immature but with adequate social adjustment, usually no obvious physical anomalies.

Moderate and mild retardation, contrary to the more severe forms, are typically not caused by brain damage but part of the normal variance of intelligence, and therefore largely genetic and inherited. This is important with regard to the question whether or not retarded persons should have children; for especially the moderate and mild forms of retardation, with which it is physically possible to have children, are the most likely to be inherited.