All over the world, people are prevented from participating fully in society through mechanisms that go beyond the structural and institutional barriers identified by rational choice theory (poverty, exclusion by law or force, taste-based and statistical discrimination, and externalities from...

How does law change society? In the rational actor model, law affects behavior only by changing incentives and information -- the command and coordination function of law. Under the view that humans are social animals, law is also a guidepost for social norms that regulate behavior -- the...

Experiments in the United States have found that pairs of individuals are generally able to form socially efficient conventions in coordination games of common interest in a remarkably short time. This paper shows that this ability is not universal. The paper reports the results of a field...

This paper is an attempt to broaden economic discourse by importing insights into human behavior not just from psychology, but also from sociology and anthropology. Whereas the concept of the decision-maker in standard economics is the rational actor and, in early work in behavioral economics,...

Behavioral economics recognizes that mental models -- intuitive sets of ideas about how things work -- can bias an individual's perceptions of himself and the world. By representing an ascriptive category of people as unworthy, a mental model can foster unjust social exclusion of, for example, a...

One of the most fruitful advances in modern economics has been the introduction of psychological realism into the model of "economic man." The World Development Report 2015 organizes the evidence about how humans actually think and make decisions into a coherent framework useful for designing...

It is typically assumed that being hard-working or clever is a trait of the person, in the sense that it is always there, in a fixed manner. However, in an experiment with almost 600 boys in India, cues to one's place in the traditional caste order turn out to influence the expression of these...

Economists have traditionally treated preferences as exogenously given. Preferences are assumed to be influenced by neither beliefs nor the constraints people face. As a consequence, changes in behaviour are explained exclusively in terms of changes in the set of feasible alternatives. Here the...

This paper assesses the role of ideas in economic change, combining economic and historical analysis with insights from psychology, sociology and anthropology. Belief systems shape the system of categories ( "pre-confirmatory bias" ) and perceptions (confirmatory bias), and are themselves...

This paper shows how badly a market economy may respond to a positive productivity shock in an environment with asymmetric information about project quality: some, all, or even more than all the benefits from the increase in productivity may be dissipated. In the model, based on Bernanke and...