Mildly retarded people can live alone if necessary and often get married. Profoundly retarded people need caring in their whole life.
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 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.
There is no evidence to suggest that Walt Whitman had any form of mental retardation. He was a celebrated American poet known for his profound work, particularly in free verse poetry.
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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.
Sometimes mental retardation is a genetic defect. Sometimes it is the result of injury.
IQ from 50 to 70 is 'Mild 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.
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There are some nursing homes in the country that will take a patient with mild mental retardation without any significant medical problems. A person may also check with assisted living facilities for this type of patient.
"Normal" IQ is between 85 and 115. Borderline intellectual funcion is between 70 and 85. Mild MR is between 55 and 69. Moderate MR is between 40 and 54 Severe MR is between 25 and 39. Profound MR is less than 25.
Intellectual disability was called mental retardation in former times. A mean of 100 is used for the standardized measure of IQ in the general population. Systems of classifying intellectual disability in the United States use the terms mild, moderate, severe and profound. People with profound ID have an IQ below 20 and cannot live independently. They require supervision and often have congenital syndromes and associated medical conditions.https://www.ncbi.nlm.nih.gov/books/NBK332877/