Severe Mental Retardation: IQ level 20-25 to approximately 35-40. Profound Mental Retardation: IQ level below 20-25. Mental Retardation, Severity Unspecified: The diagnosis is tied to the individual’s age level. There is a strong presumption of mental retardation, but the . Individuals with mental retardation represent 1% to 3% of the general population. Mental retardation is approximately 1.5 times more common in boys than in girls. Until recently, a significant proportion of individuals with mental retardation were cared for in residential .
Jun 15, 2006 · Seizures in persons with mental retardation are likely to be severe, occur often, and be difficult to control38; increase as the degree of psychomotor retardation increases39; and Cited by: 22. - Support Intensity Scale (SIS): measures pattern and level of support necessary for an adult who has mental retardation to lead a normal, independent life Mental Age Age at which a child or adolescent is actually functioning Determined by performance on standardized tests Estimate IQ by dividing mental age by chronological age and multiplying.
Mental retardation begins in childhood or before the age of 18. In most cases, this condition would persist in the adult life. Mental retardation in childhood does not mean that they cannot attain the developmental milestones of life. Normally, they attain the important milestones in .