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Only to men who aren't worth dating. Humor is part of what makes someone easy to deal with and fun to be with, which may be why it was credited for helping with short-term relationships. Evidently men in their 20s are still suffering from the madonna-whore complex (see Harry Stack Sullivan), where the woman you marry can't be the same as the one you have fun with. My wife is hilarious, and it's one of the things I value most about her.
The biggest problem with this study is that I see no distinctions made among different types of humor, which produce very different responses: self-deprecating humor, general jokes, cynical humor, or insult humor! As noted by the British comedian in the article, no one likes being cut down in public. Well, why should you appreciate being humiliated in public? If that's their criteria for "witty," then count me out as well.