Behavioral decision theory is a field of study that recognizes the crucial role that psychological and behavioral factors play in decision-making, and aims to capture and understand these factors through the use of formal theories. This graduate course provides students in business school with a comprehensive overview of the various topics in behavioral decision theory. These topics include decision-making under risk and uncertainty, decision-making over time, and decision-making in social contexts. This course emphasizes the interplay between theories, experiments, and applications in fields such as finance, labor economics, and development economics. By taking this course, students will gain a deeper understanding of psychological and behavioral factors that influence decision-making, and develop skills on how to model these factors and apply them to real-world scenarios.