Amos Tversky was an Israeli cognitive psychologist known for his groundbreaking work in the field of decision-making and behavioral economics. He collaborated closely with Daniel Kahneman, and together they developed the concept of prospect theory, which explains how people make choices involving risk and uncertainty. Their research revealed that people often rely on heuristics, or mental shortcuts, which can lead to systematic biases in judgment. Tversky's contributions significantly influenced various fields, including psychology, economics, and public policy. His work helped to establish the importance of understanding human behavior in economic models, challenging the traditional view of humans as rational decision-makers. Tversky's insights continue to shape research and applications in behavioral science today.