Evidence for this idea surfaced in a classic experiment that has become the prototype for studying ego depletion. College students taking introductory psychology at Case Western Reserve University in Ohio were required to participate in psychology experiments as part of their course, and those who went to Professor Baumeister’s laboratory for their course requirement were put into the Radish Experiment.2 The students arrived hungry because they had been told to fast before coming. Once in the lab, they were asked to force themselves to forgo the tempting chocolate chip cookies and candy and
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