Daniel Kahneman (born 1934) is an Israeli-American psychologist and economist, renowned for his groundbreaking work on the psychology of judgment and decision-making. He is a Nobel Memorial Prize laureate in Economic Sciences, awarded for his development of prospect theory with Amos Tversky, which challenged rational choice theory. Kahneman's research explores cognitive biases, heuristics, and the two systems of thinking (System 1 and System 2), profoundly influencing behavioral economics, psychology, and public policy. His seminal work, 'Thinking, Fast and Slow,' popularized these concepts for a broad audience.