A child can show several  traits while growing up but some resemble how the child will act when he or she is older. In the marshmallow test a child’s will power and self-control are tested  when  a marshmallow is given to a  child whom is told to wait for a second treat. The children who were able to wait were not only healthier when older, but also had higher grades and were able to hold down more jobs. Those who ate the marshmellow without waiting were shown to be more addictive and less healthy.