If you are using the internet for research, you probably cannot find much because of the work that would be involved to go back all of the pre-internet years to enter information kept only on paper and in books. You will probably have to find some older texts or some newer books comparing techniques of the day versus those of prior decades.
Unfortunately, much of the diagnoses were very subjective.
I'M SO SORRY!!!!!
People in the 1930's that had any kind of mental illness, were considered lunatics. They were usually taken away from society and locked away.
The mentally retarded of 1930's were put through electric shock therapy, injected with something and locked up.
Overstudy does not cause mental retardation.
TThere are quite high as it comes in different types of mental retardation.
H.M.Skeels and H.B.Dye, two psychologists who did an experiment in the 1930's on the IQ's of 13 mentally retarded children transferred from an orphanage to an institution for mental retardation. google it.
literature review on mental retardation with reference
Exposure to lead can also cause mental retardation.
The term "mental retardation" is generally considered outdated and offensive. People with intellectual disabilities may have a shorter life expectancy due to health complications or co-occurring conditions, but it is not accurate to say that a specific number of people die specifically from having an intellectual disability. It is important to focus on providing proper support and healthcare to improve the quality of life and longevity for individuals with intellectual disabilities.
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
The two conditions are not at all related. Autism does not cause mental retardation.
because some ppl are born with birth defects like 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.
In about 35% of cases, the cause of mental retardation cannot be found.
yes