We evaluate Richard Posner's famous hypothesis that common law converges to efficient legal rules using a model of precedent setting by appellate judges. Following legal realists, we assume that judicial decisions are subject to personal biases, and that changing precedent is costly to judges....

This paper begins by discussing the nature of and rationale for social insurance programs. I then consider three political principles and four economic principles that could guide the design and reform of social insurance programs. These ideas are then applied to unemployment insurance, Social...

This paper begins by discussing the inherent conflict between the simultaneous existence of a single currency for the countries of the European Economic and Monetary Union (EMU) and the independent fiscal policies of those countries. The Stability and Growth Pact was an attempt to reconcile that...

Governments around the world have enacted or are currently considering fundamental structural reforms of their Social Security pension programs. The key feature in these reforms is a shift from a pure pay-as-you-go tax-financed system, in which taxes on current workers are primarily distributed...

Simulations are presented of the probability distributions of retirement incomes relative to the "benchmark" benefits specified in current law. Calculations of expected utility show that these risk reduction techniques can raise expected utility relative to the plans with no guarantees. The...

We investigate cross-country determinants of private credit, using new data on legal creditor rights and private and public credit registries in 129 countries. We find that both creditor protection through the legal system and information sharing institutions are associated with higher ratios of...

We revisit the debate over whether political institutions cause economic growth, or whether, alternatively, growth and human capital accumulation lead to institutional improvement. We find that most indicators of institutional quality used to establish the proposition that institutions cause...

We examine the practice of military conscription around the world from the perspective of two standard theories, and a new one, which emphasizes the fixed cost of introducing and administering the draft as a deterrent to its use. We find that, holding the relative size of the military constant,...

Explanations of unethical behavior often neglect the role of competition, as opposed to greed, in assuring its spread. Using the examples of child labor, corruption, excessive' executive pay, corporate earnings manipulation, and commercial activities by universities, this paper clarifies the...

We present a model of the creation of social networks, such as political parties, trade unions, religious coalitions, or political action committees, through discussion and mutual persuasion among their members. The key idea is that people are influenced by those inside their network, but not by...