You’ve likely heard this wild (and wildly misinformed) idea in one form or another: we humans only use 10 percent of our brain. Like a horror movie monster, the myth just won’t die. Various scientists and science journalists think they’ve killed it. But as soon as they start to relax, it comes roaring back. The fact is, this notion is not even close to true.
It’s not clear how it got started. But most writers seem to think the myth can be traced back to a popular 1936 self-help book written by public speaking teacher Dale Carnegie: How to Win Friends and Influence People. And Carnegie likely expanded on a similar concept proposed by American psychologist William James.
Nope, sorry. You don’t have a lot of extra brain power just waiting for you to access it.