Diagnostic Parameter, Mental Retardation

Mental Retardation

According to the American Association on Mental Retardation (AAMR), an individual is considered to have mental retardation based on the following three criteria:

Intellectual functioning level (IQ) is below 70-75.
Significant limitations exist in two or more adaptive skill areas and the condition is present from childhood (defined as age 18 or less.).

The person's intellectual functioning is markedly below average (IQ of 70 or less on a standard, individually administered test).

In 2 or more of the following areas, the patient has more trouble functioning than would be expected for age and cultural group:

Communication
Self-care
Home living
Social and interpersonal skills
Using community resources
Self-direction
Academic ability
Work
Free time
Health
Safety

Starts before age 18.