The Marshmallow TestSelf control explained by the inventor of the famous 1960s marshmallow experiments. A child is presented with a marshmallow and given a choice: Eat this one now, or wait and enjoy two later. What will she do? And what are the implications for her behaviour later in life? Walter Mischel's now iconic marshmallow test, one of the most famous experiments in the history of psychology, proved that the ability to delay gratification is critical to living a