Mazzocco and Myers found what share of ever-diagnosed pupils were diagnosed for at least two of four years?
A25%
B65%
C85%
D95%
Answer & Solution
Correct answer: B. 65%
1. They followed children over four years.
2. Only 65% of those ever diagnosed stayed diagnosed for at least two years.
3. This shows diagnoses did not always persist.
_Source: Wikipedia, Dyscalculia, Persistence in children_
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