See Inside April/May 2006

Bigger Is Brainier?

Size seems to matter—for certain kinds of intelligence —according to a new study by Sandra Witelson, professor of psychiatry and behavioral neuroscience at McMaster University in Ontario.

Witelson asked 100 terminally ill cancer patients to take a series of cognitive tests. After each person died, she and her colleagues measured the volume of the subject’s cerebral hemispheres. On average, women with larger brains had performed better on verbal tests than women with smaller brains had. There was also a less pronounced association between brain size and visual-spatial ability. The results were equivalent for right-handed and nonright-handed women.

This is only a preview. Get the rest of this article now!

Select an option below:

Customer Sign In

*You must have purchased this issue or have a qualifying subscription to access this content

It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on
Click here to access this article in its entirety through site license access.

Share this Article:


You must sign in or register as a member to submit a comment.
Scientific American Holiday Sale

Scientific American Mind Digital

Get 6 bi-monthly digital issues
+ 1yr of archive access for just $9.99

Hurry this offer ends soon! >


Email this Article


Next Article