In this course, we will examine how people make predictable and repeatable mistakes in financial decision-making. We will describe the nature of these mistakes and their origin, using insights from psychology, neurosciences and experimental economics on how the human mind works. We will then discuss how understanding the functioning of the human mind allows us to design a better world—in particular, better stock markets, retirement and healthcare systems. As such, this course is markedly multidisciplinary, lying at the intersection of financial economics and cognitive sciences, with both experimental and theoretical components. This course is extremely interactive in nature and heavily relies on experiential learning. For instance, students will participate in many behavioral experiments, both in the classroom and at home. Lots of in-class discussions will also be organized.