An old Wall Street adage states that two factors move the market: fear and greed. This characterization is far too simplistic. The human mind is so sophisticated and human emotions are so complex that the emotions of fear and greed do not adequately describe the psychology that affects people as they make decisions. Indeed, emotions may not even drive decisions as much as psychological biases and cognitive errors. This seminar delves into this fascinating and important subject. Topics covered will be cognitive errors, risk perceptions, framing, social interaction, and more.