Question: Is your brain actually different sizes depending on how clever you are?

Kevin Arbuckle answered on 11 Mar 2014:

Lots of studies have found that more intelligent people have bigger brains, but there is also some disagreement about what this means. One of the biggest issues is that it’s actually very difficult to measure intelligence or ‘cleverness’. We don’t really have a particularly good measure of how intelligent people are overall, so it makes it a bit tricky to figure out what traits (such as brain size) are related to cleverness.