Tommy is a researcher studying whether gray matter volume in the brain can predict how well individuals perform on a test of crystallized intelligence. Due to budgetary constraints, he decides to measure the volume of only one area of the brain. Will this be sufficient to answer his research question?
A. No, because there is not a direct association between volume in any one region of the brain and intelligence.
B. No, because only white matter volume in the brain's intelligence center is associated with intelligence.
C. Yes, because there is a direct association between intelligence and volume in each specific region of the brain.
D. Yes, because gray matter volume is consistent throughout the brain and should be the same regardless of where it is measured.
Answer: A
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