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

Question

Accepted Answer

Option 4, which states that the approximate I.Q. range of 'Mongolism' (now more appropriately referred to as Down syndrome) mentally retarded children is 36 to 51, is considered correct based on historical classifications of intellectual disability.

1. **Explanation for Option 4:**
   - Historically, individuals with Down syndrome have been classified within the mild to moderate range of intellectual disability. The I.Q. range of 36 to 51 falls within this classification, indicating a moderate level of intellectual disability. This range reflects the capabilities of individuals who can often learn to perform daily tasks and may achieve some degree of independence with support.

2. **Explanation for why other options are incorrect:**
   - **Option 1 (20 to 25):** This range is typically associated with severe intellectual disability. Individuals within this I.Q. range often require significant support for daily living and have limited communication skills. This does not align with the general capabilities observed in individuals with Down syndrome, who often have higher functioning levels.
   - **Option 2 (below 20):** An I.Q. below 20 is indicative of profound intellectual disability. Individuals in this category require constant care and supervision and have very limited ability to communicate or perform daily tasks. This is not representative of the typical cognitive abilities of individuals with Down syndrome.
   - **Option 3 (25 to 36):** This range suggests a severe level of intellectual disability, which is more restrictive than what is generally observed in individuals with Down syndrome. While some individuals with Down syndrome may fall into this range, it is not the typical or average range for the majority.

In conclusion, Option 4 is the correct choice as it aligns with the historical understanding of the intellectual capabilities of individuals with Down syndrome, reflecting a moderate level of intellectual disability.