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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!!!!!
What else can I help you with?
Does over-study causes mental retardation?
Overstudy does not cause mental retardation.
How common is mental retardation?
TThere are quite high as it comes in different types of mental retardation.
Who were Skeels and Dye?
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.
Exposure to what element can cause mental retardation?
Exposure to lead can also cause mental retardation.
Can you give me a literature review on mental retardation and depression?
literature review on mental retardation with reference
How many kinds of retardation is there?
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
Why do some people have mental retardation?
because some ppl are born with birth defects like mental retardation
How often does autism result in mental retardation?
The two conditions are not at all related. Autism does not cause mental retardation.
What is the association between mental retardation and cerebral palsy?
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.
Is the marriage of two relatives couple causes mental retardation in their children in afamily has case history of mental retardation?
yes
In how many cases of mental retardation does the cause remain a mystery?
In about 35% of cases, the cause of mental retardation cannot be found.
What has the author Cathy Covert written?
Cathy Covert has written: 'Mental retardation' -- subject(s): Child, Mental retardation
