rate objectively
Mild Mental Retardation-About 85 % of persons that are Mentally Retarded fall into this group------>IQ level 50-55 up to about 70.
Moderate Mental Retardation-About 10 % of persons that are Mentally Retarded fall into this group------>IQ level 35-40 to 50-55
Severe Mental Retardation-About 3 % to 4 % of persons that are Mentally Retarded fall into this group-------->IQ level 20-25 to 35-40.
Profound Mental Retardation- About 1 % to 2 % of persons that are Mentally Retarded fall into this group-------->IQ level below 20 or 25.
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