| 11. | But Arthur has an excuse _ he has a mental age of about four.
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| 12. | An estimated mental age and IQ may also be obtained from the same table.
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| 13. | Derek Bentley was unable to read or write and had a mental age of 11.
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| 14. | A moron, by his definition, was any person with mental age between eight and twelve.
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| 15. | The concept of " mental age " doesn't work.
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| 16. | Nazimah says he has the mental age of a six-month-old and has to wear diapers.
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| 17. | This individual is either 15 y / o or has a mental age of 15.
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| 18. | "She used to call me ` Nine'because she said that was my mental age ."
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| 19. | Mental age was once considered a controversial concept.
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| 20. | Mr Ali was described an autisitic man who had the mental age of a five-year old.
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