Intellectual Disability (ID): An ID is defined as an IQ below 70 (<70).
IQ = (Mental age / Chronological age) x 100
|
Classification |
IQ range |
How to remember? |
|
Mild ID |
50 - 69 |
<70 |
|
Moderate ID |
35 - 49 |
<50 |
|
Severe ID |
20 - 34 |
<35 |
|
Profound ID |
<20 |
<20 |