IT BEGAN with some marshmallows. In the 1960s Walter Mischel, a psychologist then working at Stanford University, started a series of experiments on young children. A child was left alone for 15 minutes with a marshmallow or similar treat, with the promise that, if it remained uneaten at the end of this period, a second would be added. Some of the children, who were aged four or five at the time, succumbed to temptation before time was up. Others resisted, and held out for the reward. Then, it w...
IT BEGAN with some marshmallows. In the 1960s Walter Mischel, a psychologist then working at Stanford University, started a series of experiments on young children. A child was left alone for 15 minutes with a marshmallow or similar treat, with the promise that, if it remained uneaten at the end of this period, a second would be added. Some of the children, who were aged four or five at the time, succumbed to temptation before time was up. Others resisted, and held out for the reward. Then, it w...
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