A brain experiment on abstract vs representational art reveals the secrets of how we make decisions, and how we impulsive humans may finally learn to delay gratification. Psychologist Daphna Shohamy, Professor of Psychology at the Zuckerman Mind Brain Behavior Institute at Columbia University, explains "construal level theory" and what that means about art -- and dessert. Plus... The Stendahl Syndrome (aka an Art Attack), in which great works can quite literally knock you flat.