Behavioral Decision Theory is a field that examines how people make choices and the psychological factors that influence their decisions. It combines insights from psychology, economics, and cognitive science to understand why individuals often deviate from rational decision-making models. This theory highlights the impact of biases, emotions, and social influences on our choices. Researchers in this area study various phenomena, such as cognitive biases, heuristics, and risk perception, to explain how people evaluate options. By understanding these behaviors, policymakers and businesses can design better systems and strategies that align with how people actually think and behave, rather than how they should ideally act.