After a couple of minutes on the blanket spent relaxing and listening to music from a portable radio, the accomplice would stand up and leave the blanket to stroll down the beach. A few minutes later, a second researcher, pretending to be a thief, would approach, grab the radio, and try to hurry away with it. As you might guess, under normal conditions, subjects were very reluctant to put themselves in harm’s way by challenging the thief—only four people did so in the twenty times, that the theft was staged. But when the same procedure was tried another twenty times, with a slight twist, the
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