|
|
|
|
DEGREES OF SEVERITY |
|
|
Mental health clinicians have defined four degrees of severity of mental retardation based on IQ score. These are mild retardation (IQ range 50-55 to about 70), moderate (IQ range 35-40 to 50-55), severe (IQ range 20-25 to 35-40), and profound (IQ level below 20-25). People of average intelligence score from about 90 to 110 on IQ tests. |
|
|
|
|
|
|
|
|
|