Mental Retardation

Mental Retardation

A generalised neurodevelopmental disorder, mental retardation (MR) is characterised by significantly impaired intellectual and adaptive functioning. It is also known as mental retardation syndrome. It is defined by a combination of a low IQ (below 70) and difficulties in two or more adaptive behaviours that impact daily life. The severity of intellectual disability can range from mild to moderate too severe to profound. ID is sometimes categorised as “other” or “unspecified,” depending on the circumstances. ID is characterised by both a low IQ and difficulties adapting to the demands of everyday life. There is also the possibility of difficulties with learning, speech, social interaction, and even physical ability.


Failure to live up to intellectual expectations

Later than other children, sitting, crawling, or walking

Problems learning to talk or difficulty speaking clearly

Memory problems

Incapacity to comprehend the results of one's actions

Lack of the ability to think in a logical manner

Inappropriately juvenile conduct for a child of that age

Lack of interest in the world around them

Having trouble learning something

IQ lower than 70



Behaviour characterised by a withdrawal from social activities and an excessive need for attention

Lack of ability to control one's impulses during the preteen and teenage years can lead to depression.