Using diagnostic criteria set forth in manuals such as DSM and ICD. Assessments involve tests of intelligence such as the WISC, WJ, PTONI, and DTLA. Concurrent deficits in adaptive behavior are also required for the diagnosis. Mental retardation is a developmental disorder. Therefore, it is diagnosed early in life.
A diagnosis of mental retardation is made if an individual has an intellectual functioning level well below average and significant limitations in two or more adaptive skill areas.
In the case of Jim Cook its is 38!!
Generally speaking, mental disabilities such as the antiquated term retardation are diagnosed anytime before the age of 18. Specifically though, it is possible to reach a diagnosis as early as 24 months.
Overstudy does not cause mental retardation.
Some cases of mild mental retardation are not diagnosed before the child enters preschool. These children typically have difficulties with social, communication, and functional academic skills.
TThere are quite high as it comes in different types of mental retardation.
literature review on mental retardation with reference
Exposure to lead can also cause mental retardation.
Mental retardation occurs in 2.5-3% of the general population.
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.