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...

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...

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...

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...

In standard economics, individuals are rational actors and economic forces undermine institutions that impose large inefficiencies. The persistence of the caste system is evidence of the need for psychologically more realistic models of decision-making in economics. The caste system divides...

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...

A core insight from early behavioral economics is that much of human judgment and behavior is influenced by "fast thinking" that is intuitive, associative, and automatic; very little human thinking resembles the rational thinking that characterizes homo economicus. What is less well-recognized is...

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...

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,...