Big Head Big Brain?

Have you ever wondered if people with big heads have big brains? Actually, they do.

Young people with wide heads tend to have higher IQs. Scientists say skull size is directly related to brain volume and mental ability.

And there's more good news for big heads, people with bigger skulls have better memories in old age. Researchers tested people age 70 to 80 with an IQ and memory test, and the ones with the largest head circumference scored much better. They even showed less degeneration three years later, and were at a lower risk of Alzheimer's.

Source: Prof. Grant Hurlburt, California State University