You are currently previewing the NEW Scientific American site. Tell us what you think or view the old site
Now Reading Mom Was Right
This is a Preview. Buy this Digital Issue or Sign In
So you goofed...
We learn more from our mistakes than from our successes, the old cliché says—and now scientists know why. Researchers at the University of Exeter in England discovered a brain mechanism that alerts us to situations in which we previously went wrong.