Bounded Rationality, Beliefs, and Behavior

This chapter presents a microeconomic, behavioral perspective on bounded rationality and beliefs. It begins with an account of how research on belief biases, in particular via probabilistic belief elicitation, has become mainstream in economics only relatively recently and late, even in behavioral economics (aka “psychology and economics”). The chapter then offers a review of the decision-theoretic foundations of modeling and eliciting (subjective) beliefs as probabilities, as well as selected—both classic and recent—evidence on humans’ bounded rationality from related research in psychology and economics. In doing so, it connects the historical debates within decision theory, on the one hand, and within psychology, on the other, concerning the normative status of expected utility and Bayesianism, as well as its methodological implications. A conclusion draws lessons for the practice of belief elicitation and future research.