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Historical and Modern IQ
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AP Psychology
AP.172 Historical and Modern IQ
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A 5-year-old has a mental age of 7, and a 10-year-old has a mental age of 12. Why do they not have the same historical IQ?
A
Their ratios differ: 7/5 is greater than 12/10.
B
Chronological age is irrelevant in the formula.
C
Modern IQ scores are always equal for children.
D
Their mental ages differ by exactly 5 years.
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