What is the approximate I.Q. range of 'Mongolism' mentally retarded children?

Mental retardation refers to an intellectual disability characterized by low Intelligence Quotient (IQ) and impairments in adaptive daily life skills. 

Key Points

Common Clinical Types of Mental Retardation:

• Mental deficiency or retardation based on a number of clinical symptoms and syndromes is useful in the identification, treatment, and care of retardates.

Mongolism Mental Retardation:

• The mental deficiencies whose facial characteristics bear a superficial resemblance to members of the Mongolian race are classified as mongolism.
• The average score for an individual with mongolism is approximately an IQ of 36 to 51.
• The mongoloids tend to be short in stature with small round heads abnormally short necks, thumbs, and fingers, slanting almond-shaped eyes, and short flat noses.
• They usually have a small mouth, fissured and dry lips, and tongue. They have a deep voice and their motor coordination is awkward.
• They are handicapped in learning or training, but most of them can learn self-help skills, acceptable social behavior and routine manual skills.
• The causes of mongolism are faulty heredity anomalies and metabolic factors like glandular imbalance often involving the pituitary gland.
• It is irreversible and there is no effective treatment or workable preventive measures.

Hence, it could be concluded that '36 to 51' is the approximate I.Q. range of 'Mongolism' mentally retarded children.