These categories are based on the functioning level of the individual.
Overstudy does not cause mental retardation.
TThere are quite high as it comes in different types of mental retardation.
Exposure to lead can also cause mental retardation.
literature review on mental retardation with reference
appear normal at birth but their development is delayed. Most boys with fragile X syndrome have mental impairment. The severity of mental impairment ranges from learning disabilities to severe mental retardation
Mental retardation has different levels. There is Mild intellectual disability; moderate intellectual disability; severe intellectual disability; and Profound intellectual disability.https://www.floridahospital.com/mental-retardation-mr/symptoms-and-signs-mental-retardation
because some ppl are born with birth defects like mental retardation
The two conditions are not at all related. Autism does not cause mental retardation.
About one-third of individuals with CP have moderate-to-severe mental retardation, one-third have mild mental retardation, and one-third have normal intelligence.
yes
In about 35% of cases, the cause of mental retardation cannot be found.
Cathy Covert has written: 'Mental retardation' -- subject(s): Child, Mental retardation