MENTAL RETARDATION
According to DSM-5 and WHO ICD-10:
Category
Mild MR
Moderate MR
Severe MR
Profound MR
IQ Range
50–70
35–49
20–34
<20
Description
Can learn up to primary school level; may live independently with minimal support.
Can learn simple communication and self-care; may do simple jobs under supervision.
Limited communication, needs assistance in daily activities, often institutionalized.
Severe limitations, requires constant supervision and care.