Want to know how much you will enjoy an experience? Well, then ask a stranger, suggests a new study, which found that another person's experience is often more informative than your own best guess.
The study was led by Daniel Gilbert, professor of psychology at Harvard University and author of the 2007 bestseller "Stumbling on Happiness," along with Matthew Killingsworth and Rebecca Eyre, also of Harvard, and Timothy Wilson of the University of Virginia.
Advertisement"If you want to know how much you will enjoy an experience, you are better off knowing how much someone else enjoyed it than knowing anything about the experience itself. Rather than closing our eyes and imagining the future, we should examine the experience of those who have been there," said Gilbert.
In one experiment, women predicted how much they would enjoy a "speed date" with a man. Some women read the man's personal profile and saw his photograph, and other women learned nothing whatsoever about the man, but did learn how much another woman (whom they had never met) had enjoyed dating him.
Women who learned about a previous woman's experience did a much better job of predicting their own enjoyment of the speed date than did woman who studied the man's profile and photograph.
Interestingly, both groups of women mistakenly expected the profile and photo to lead to greater accuracy, and after the experiment was over both groups said they would strongly prefer to have the profile and photograph of their next date.
In the second experiment, two groups of participants were asked to predict how they would feel if they received negative personality feedback from a peer.
Some participants were shown a complete written copy of the feedback. Other were shown nothing, and learned only how a total stranger had felt upon receiving the feedback.
The latter group more accurately predicted their own reactions to the negative feedback. Once again, participants mistakenly guessed that a written copy of the feedback would be more informative than knowledge of a total stranger's experience.
"People do not realize what a powerful source of information another person's experience can be because they mistakenly believe that everyone is remarkably different from everyone else. But the fact is that an alien who knew all the likes and dislikes of a single human being would know a great deal about the species," Gilbert said.
The study appears in the current issue of Science.
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