Restaurant servers who copy their customers' behavior get double the tips of servers who don't do this. And the No. 1 way to mirror the customer--and get a big payoff for doing it--is to repeat back the order.

That's the word from Dutch psychologists from the University of Nijmegen. Lead study author Rick van Baaren told Nature News Service, "Mimicry creates bonds between people. It induces a sense of 'we-ness'. You know that what you're doing is okay, and you become more generous."


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