Psych students

n the late 1960s, psychologist Walter Mischel performed a series of tests on preschoolers referred to as The Marshmallow Tests. Mischel would give a child a single marshmallow, then leave him or her alone in the room with it. Before he departed, he'd make each kid an offer: if they wanted to, they could eat it immediately -- but if they waited for him to return, they'd get two marshmallows. The tests were designed to examine willpower and the mental processes behind delayed gratification.