When I was in college, I took a course on child education. We did an experiment with two children to test how patient they can be and what their motivation is when it comes to rewards. Our subjects were twin girls at the age of 5. They didn’t know why they were coming in or what was going to happen. Our experiment began with separating the twins into 2 different rooms. One room had our subject Stacey, and the other had her sister Valerie. They couldn’t see, or hear each other between the room which validated that they won’t copy each other and there are no other influences. This experiment we were testing is called the marshmallow test. By tempting the child with a marshmallow on a plate you explain that if they are willing to wait 10 minutes without eating the marshmallow, you will be rewarded a second marshmallow at the end of the 10 minutes. But if the subject eats the marshmallow before the 10 minutes are up, there will not be a second marshmallow.