(Hat) Size Matters?

A researcher at Viginia Commonwealth has allegedly discovered that another popular stereotype is true. Yes, Virginia, size matters, at least brain size.
“For all age and sex groups, it is now very clear that brain volume and intelligence are related,” said lead researcher Michael A. McDaniel, Ph.D., an industrial and organizational psychologist who specializes in the study of intelligence and other predictors of job performance.
The study evidently collates MRI measured brain volume and IQ scores from 26 previous studies and finds a strong correlation.

The paper is here and the abstract is:
The relationship between brain volume and intelligence has been a topic of a scientific debate since at least the
1830s. To address the debate, a meta-analysis of the relationship between in vivo brain volume and intelligence was conducted. Based on 37 samples across 1530 people, the population correlation was estimated at 0.33. The correlation is higher for females than males. It is also higher for adults than children. For all age and sex groups, it is clear that brain volume is positively correlated with intelligence.
This result suggests radically simplified admissions criteria for our top universities. MRIs are probably just as burdensome as SATs, but for simplicity we could just go with hat size.

If the hat don't fit, you must admit.

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