The pratfall effect is the tendency for someone’s appeal to increase or decrease after making a mistake, depending on his or her perceived ability to perform well in general. In one study conducted by Professor Lisa Rosh from Lehman College, a woman introduced herself, not by mentioning her credentials and education, but by talking about how she’d been awake the previous night caring for her sick baby. It took her months to reestablish her credibility. If this same woman was first presented as a Nobel Prize winner, the exact same words about being up all night with the baby would provoke
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