Severe Mental Retardation

By Gillian Fournier

An IQ score between 20-25 and 40.

Example: Behavioral observations of a twelve-year-old child indicate that his capacity for adaptive learning is at the average level for four-year-olds.

Her is a list of caegories that show general guidelines for judging the level of retardation including mild, moderate-severe, and severe:

    Last reviewed: By John M. Grohol, Psy.D. on 6 Aug 2010