New take on old research on smiling might make people smile, then think

Renowned research about smiling is, suddenly, making some scientists smirk. The British Psychological Society’s Research Digest explains:

No reason to smile – Another modern psychology classic has failed to replicate

By Christian Jarrett

The great American psychologist William James proposed that bodily sensations – a thumping heart, a sweaty palm – aren’t merely a consequence of our emotions, but may actually cause them. In his famous example, when you see a bear and your pulse races and you start running, it’s the running and the racing pulse that makes you feel afraid.

Consistent with James’ theory (and similar ideas put forward even earlier by Charles Darwin), a lot of research has shown that the expression on our face seems not only to reflect, but also to shape how we’re feeling. One of the most well-known and highly cited pieces of research to support the “facial feedback hypothesis” was published in 1988 and involved participants looking at cartoons while holding a pen either between their teeth, forcing them to smile, or between their lips, forcing them to pout. Those in the smile condition said they found the cartoons funnier.

But now an attempt to replicate this modern classic of psychology research, involving 17 labs around the world and a collective subject pool of 1894 students, has failed. “Overall, the results were inconsistent with the original result,” the researchers said.

The replication effort which has been published online in Perspectives on Psychological Science attempted to stay extremely close to the original 1988 study…

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