This paper develops a methodology for simulating the effects of alternative corporate tax reforms on the stock market valuation and investment plans of individual firms. The methods are applied to estimate the effects of alternative corporate tax reforms on the 30 Dow Jones companies. The...

This article uses Tobin's q, the ratio of the market value of a firm to the replacement value of its physical assets, to measure monopoly power and to examine the relationship between market structure and profitability. Tobin's q is a better measure of monopoly profits than indices of...

Identity theft is made possible by the nature of modern payment systems. In the modern economy, sellers are willing to offer goods and services to strangers in exchange for a promise to pay, provided the promise is backed up by data that link the buyer to a specific account or credit history....

We model competitive bundling and tying, allowing for marginal cost savings from bundling, fixed costs of product offerings, and variation in customer preferences. Pure bundling can arise either because few people demand only one component or because, with high fixed costs, a single product...