Delayed Gratification (2 of 2) (VIDEO) University of Rochester This video is under embargo. Please login to access this video. Caption For the past four decades, the "marshmallow test" has served as a classic experimental measure of children’s self-control: will a preschooler eat one of the fluffy white confections now or hold out for two later? Now a new study demonstrates that being able to delay gratification is influenced as much by the environment as by innate ability. Credit Matthew Mann/University of Rochester Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.