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I. Introduction This paper focuses on the impact of competition by imitation, more specifically copying, for innovative activity and social welfare. In part, it is a response to recent empirical [...]

A study was conducted to examine changes in social welfare arising from US merger activities in the manufacturing industries. The study focuses on market level conditions and considers data covering the period from 1985 to 1986. It is shown that over short durations, market customers lost because of the merger activities while the industry firms gained. However, the margin of gain was not enough to support consumer losses.

An analysis is made of the joint effects of third-degree price discrimination and excise taxation in several different ways. Results show that in a traditional single market monopoly model, ad valorem and specific taxes provide the same level of welfare measure at a given output level. However, for revenue neutral excise taxes, the demand ad valorem tax system produces more total output than the unit or specific tax before the revenue maximizing unit tax rate.