Reciprocity works just as well for bargaining. Cialdini was once asked by a boy scout to buy tickets to a movie he didn’t want to see. When Cialdini said no, the scout asked him to buy some less expensive chocolate bars instead. Cialdini found himself walking away with three chocolate bars that he didn’t want. The scout had made a concession, and Cialdini automatically reciprocated by making a concession of his own. But rather than getting mad, Cialdini got data. He conducted his own version of the encounter, asking college students walking on campus whether they would volunteer to chaperone a
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