Past empirical literature provides strong evidence that competition increases when new firms enter a market. However, rarely have economists been able to examine how competition changes with the threat of entry. This paper uses the evolution of the zip code level market structure of...

The researchers Bresnahan and Reiss (1987, 1990, and1991) proposed the use of a firm's entry threshold ratio as a means ofmeasuring variance in a firm's competitive conduct as competition increaseswithin the industry. Building on the aforementioned research, this studyutilizes the entry and exit...

This survey reviews the existing literature, identifying the contribution of agriculture, schooling, and nutrition to economic growth and development over time and across countries. Particular attention is paid to the roles of improvements in agricultural technology and of the human capital of...

Contingent valuation methods are used to identify observed and unobserved preferences of goods and services. We apply these methods, in the context of multivariate probit analysis, to compute willingness to pay for each product of a cluster of goods conditional on having purchased another...