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  » Baby's developmental milestones  »  Characteristics of Varying Degrees of Mental Retardation
Characteristics of Varying Degrees of Mental Retardation
IQ = MA/CA* SD Function Physical Findings Family History of Mental Retardation Socio-cultural Factors Prevalence (%) Therapeutic Goals
MR Pop General Pop
Borderline 70-84 1.01 to 2.00 Basic academic skills, "slow learner" Essentially normal + 4+ 67 13 Basic academic and social skills to be capable of self-support and independent living in community
Mild 55-69 2.01 to 3.00 Educable Essentially normal + 3+ 22 2.7 Same as above
Moderate 40-54 3.01 to 4.00 (vocational training) Trainable Increasing frequency of neurologic deficits; stigmata of dysmorphism Only in cases due to genetic disorders. Same as above 0 6 0.2 Self-care skills involving activities of daily living and sheltered workshop
Severe 25-39 4.01 to 5.00 Dependent Same as above Same as above 0 3 0.1 Protective care at home or group home
Profound 25 5.00 Totally dependent Same as above Same as above   0 2 0.05 Custodial care
*Mental Age/Chronologic Age