In what has become known as "the marshmallow test" of delayed gratification, researchers in the 1960s developed a novel way to measure self-control among children. Having recruited preschoolers from a university daycare, scientists presented each child with one marshmallow. They were then told they could either eat the one they had or wait an unspecified amount of time and be rewarded with an additional marshmallow. Various follow-up studies on delayed gratification have been performed on the results since the project's conclusion. This particular study attempted to determine what correlation, if any, existed between the self-control of the children at age 4 and the rate of obesity among the now adult participants.
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