22 Learning disability – 1
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1. The prevalence of learning disability (LD) is 2%. | ![]() |
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2. Larger sibships in Social class IV are associated with an increased risk of LD. | ![]() |
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3. If a child with LD and an autistic disorder uses few words before the age of 6 years, they are likely to remain mute. | ![]() |
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4. Impaired prosody is a feature of Asperger syndrome. | ![]() |
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5. Language development is delayed in Asperger syndrome. | ![]() |
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6. If a couple has one child with Down’s syndrome due to translocation, the risk of a subsequent child with the syndrome is about 1%. | ![]() |
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7. Down’s syndrome is the most common cause of learning disability. | ![]() |
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8. Patients with Down’s syndrome have a high risk of vascular dementia. | ![]() |
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9. Down’s syndrome is associated with hypertension. | ![]() |
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10. Language development is normal in Down’s syndrome. | ![]() |
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11. A defective gene which leads to the Fragile X abnormality has been identified. | ![]() |
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12. Fragile X syndrome almost never occurs in females. | ![]() |
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13. Survival into adolescence is rare for patients with Hunter’s syndrome. | ![]() |
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14. Klinefelter syndrome occurs in 1 in 1000 live births. | ![]() |
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15. Lesch–Nyhan syndrome is a sex-linked recessive disorder. | ![]() |
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16. Metachromatic leucodystrophy is an X-linked recessive condition. | ![]() |
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17. If a healthy couple has a baby with phenylketonuria, the chances of the next baby having the same condition are less than 1%. | ![]() |
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18. People with Prader–Willi syndrome have an ‘elfin’ face. | ![]() |
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19. Half the patients with Sturge–Weber syndrome may not have mental retardation. | ![]() |
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20. Tuberous sclerosis complex may be due to a new mutation. | ![]() |
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21. Most patients with Turner’s syndrome have learning disabilities. | ![]() |
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22. William’s syndrome is due to a mutation on chromosome 13. | ![]() |
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23. Irritability is a common symptom of depression in LD. | ![]() |
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24. Schizophrenia is rare in people with LD. |