“I just shot an elephant in my pajamas,” goes the old Groucho Marx joke. “How he got in my pajamas I don’t know.”
You’ve probably heard that one before, or something similar. For example, while viewing polling data for the 2008 presidential election on Comedy Central, Stephen Colbert deadpanned, “If I’m reading this graph correctly…I’d be very surprised.”
Zingers like these aren’t just good lines. They reveal something unusual about how the mind operates—and they show us how humor works. Simply put, the brain likes to jump the gun. We are always guessing where things are going, and we often get it wrong. But this isn’t necessarily bad. It’s why we laugh.
It turns out that humor is a form of mental exercise, and we benefit from it in the same way we benefit from a long run or a tough spin class. Scott Weems, author of “Ha! The Science of When We Laugh and Why” explains how humor increases mental stamina and flexibility. Photo: Getty.
Humor is a form of exercise—a way of keeping the brain engaged. Mr. Colbert’s line is a fine example of this kind of mental calisthenics. If he had simply observed that polling data are hard to interpret, you would have heard crickets chirping. Instead, he misdirected his listeners, leading them to expect ponderous analysis and then bolting in the other direction to declare his own ignorance. He got a laugh as his audience’s minds caught up with him and enjoyed the experience of being fooled.
We benefit from taxing our brains with the mental exercise of humor, much as we benefit from the physical exercise of a long run or a tough tennis match. Comedy extends our mental stamina and improves our mental flexibility.
A 1976 study by Avner Ziv of Tel Aviv University found that those who listened to a comedy album before taking a creativity test performed 20% better than those who weren’t exposed to the routine beforehand.
In 1987, researchers at the University of Maryland found that watching comedy more than doubles our ability to solve brain teasers, like the so-called Duncker candle problem, which challenges people to attach a candle to a wall using only a book of matches and a box of thumbtacks.
Research published in 1998 by psychologist Heather Belanger of the College of William and Mary even suggests that humor improves our ability to mentally rotate imaginary objects in our heads—a key test of spatial thinking ability.
The benefits of humor don’t stop with increased intelligence and creativity.
Like exercise, humor helps to prepare the mind for stressful events. A study done in 2000 by Arnold Cann, a psychologist at the University of North Carolina, had subjects watch 16 minutes of stand-up comedy before viewing “Faces of Death”—the notorious 1978 shock film depicting scene after scene of gruesome deaths. Those who watched the comedy routine before the grisly film reported significantly less psychological distress than those who watched a travel show instead. The degree to which humor can inoculate us from stress is quite amazing (though perhaps not as amazing as the fact that Dr. Cann got his experiment approved by his university’s ethical review board).