The study, which was published in the Journal of Molecular Psychiatry, looked at the link between genes, IQ and overall health. Researchers collected data from more than 100,000 people. They found that people born with big heads were more likely to earn a college degree, as well as score higher on verbal-numerical reasoning tests.
But what exactly constitutes a big head? Babies born with a head circumference larger than the average of 13.5-14 inches were likely to exhibit greater intelligence later in their lives.
However, big heads weren't the only predictor of intelligence. The study also found that greater overall health is linked to higher levels of intelligence.
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