In this episode, Martin and Cristina cover the famous Marshmallow Study, a study of delayed gratification in children. Since it's rise in popularity, the Marshmallow Study has been touted as a predictive test that could accurately categorize people into low and high achievers, people willing to delay their own gratification for long term gain and impulsive people unwilling to wait for bigger rewards. What were the parameters of the original study? What was going on at Stanford University in the 1970s?