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...

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...