The old and still popular terms were adjusted downward from normal- Moron ( high and low grade) Imbecile, and Idiot. for some reason Moron and Idiot remain in popular usage but imbecile, even in slang usage is rarely used.
Overstudy does not cause mental retardation.
mental retardation,congenital anomalies
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
Down syndrome is the genetic disorder characterized by varying degrees of mental retardation. It is caused by the presence of an extra copy of chromosome 21. Symptoms of Down syndrome can vary widely, but intellectual disability is a common characteristic.
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.