The Marshmallow Test: Walter Mischel

The Marshmallow Test is a test created by a man named Walter Mischel. This test tests the self-control of a child usually under six-years-old. The child must wait in a room with one marshmallow, or any other goodie they like. They must wait in the room without eating the item in front of them for as long as twenty minutes! If the child succeeds, they get two of same food that they had waited for. If they eat it, the child does not get the second one.
A four or five-year-old would probably not be able to sit in that room without eating the marshmallow or any other item. Two out of three usually ate the object, while one out of three did not. A great majority of the one out of three who did not eat the food were successful and had great grades