Remembrance For Walter Mischel, Psychologist Who Devised The Marshmallow Test

Walter Mischel, a psychologist who devised the marshmallow test, explained what it really means.

Walter Mischel had an idea that became a pop culture touchstone. He wanted to see if preschoolers seated in front of a marshmallow could delay their gratification. What did the experiment really mean?

(Image credit: Marcie LaCerte/NPR)

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