For centuries, we’ve explored this question, sometimes with very biased answers. Find out what modern research says about brain size and IQ.

Add Yahoo as a preferred source to see more of our stories on Google. Hobbits are exceptions to the rule that older ancient humans had proportionally larger wisdom teeth and smaller brains. Jim Watson ...

You are a child who grew up. The inevitability of a child’s growth is both celebrated and mourned. Under normal circumstances, parents can do little but stand back and watch as shoe sizes climb, ...

The evolution of the human species is marked by an increase in brain size. Now new research suggests that could be partly dependent on increases in prenatal estrogen—revealed by looking at the length ...

Vertebrates have extremely different brain sizes: even with the same body size, brain size can vary a hundredfold. As a rule, mammals and birds have the largest brains in relation to their body size, ...

The coordinated expansion of these brain regions accounts for much of the variation in brain size across primate species. Given their role in fine motor skills and spatial processing, these areas were ...

Researchers have found that both cannabis and tobacco use are linked to changes in brain size in important areas that control ...

Island syndrome refers to a suite of traits including reduced size, brain shrinkage, loss of flight in birds and tamer behavior. Until now, island brain size has mainly been studied in fossils of ...

Over the last decades, research has proven that aging isn’t just about our years in birthdays. Instead, we may be better served by knowing how organs and cells have handled those years. This powerful ...