© AMERICAN MENSA LTD; ISTOCKPHOTO
This article was originally published with the title "Head Games" in SA Mind 24, 4, 74 (September 2013)
doi:10.1038/scientificamericanmind0913-74
Support science journalism.
Thanks for reading Scientific American. Knowledge awaits.
Already a subscriber? Sign in.
Thanks for reading Scientific American. Create your free account or Sign in to continue.
Create Account