24 Learning disability – 3
| T | F | |
|---|---|---|
| 1. The administrative prevalence of learning disability is approximately double that of its true prevalence. |  |  |
| 2. Placental transmission of the mumps virus can cause learning disability. |  |  |
| 3. In Angelman syndrome paternal disomy is more common than in Prader–Willi syndrome. |  |  |
| 4. Lack of empathy is a characteristic feature of Asperger syndrome. |  |  |
| 5. Cri du chat syndrome is caused by a deletion on the long arm of chromosome 5. |  |  |
| 6. Down’s syndrome affects approximately 1% of live births. |  |  |
| 7. Down’s syndrome is associated with a loss of acquired milestones. |  |  |
| 8. Hypomania is common in Down’s syndrome. |  |  |
| 9. Down’s syndrome is associated with hypothyroidism. |  |  |
| 10. Fragile X syndrome is a sex-linked disorder. |  |  |
| 11. Gaze avoidance is characteristic of Fragile X syndrome. |  |  |
| 12. The incidence of galactosaemia is 1:200 000. |  |  |
| 13. Hurler’s syndrome can be treated with diet. |  |  |
| 14. Klinefelter syndrome is characterized by a long penis and large testes. |  |  |
| 15. Lesch–Nyhan syndrome can be diagnosed prenatally by sampling amniotic fluid. |  |  |
| 16. Niemann–Pick disease is an autosomal recessive disorder. |  |  |
| 17. Phenylketonuria is treated with a low tryptophan diet. |  |  |
| 18. Rett syndrome is associated with loss of acquired milestones. |  |  |
| 19. Patients with Tay–Sachs disease usually die during childhood. |  |  |
| 20. Most patients with tuberous sclerosis complex have normal intelligence. |  |  |
| 21. Hypsarrhythmia is a feature of West syndrome. |  |  |
| 22. Wilson’s disease is an autosomal recessive disorder. |  |  |
| 23. XYY phenotype is associated with low IQ. |  |  |
| 24. The risk of epilepsy in those with profound LD is 100 times that in the general population. |  |  |
25.
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