NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Protection and the Product Line: Monopoly and Product Quality

Kala Krishna

NBER Working Paper No. 1537
Issued in 1985
NBER Program(s):   ITI   IFM

Thereare three points made in this paper. The first is that the question concerning choice of a product line by a monopolist is similar in structure to other adverse selection problems -- and can be analyzed in an elementary way by adapting techniques recently developed for such problems. Such an analysis is developed in the first section. The second is that when a foreign monopolist produces a product line, protection will change the composition of the entire product line.The nature of such effects is studied in the second section and this analysis is greatly simplified by the results of the first sectton. In line with empirical work on the subject, quotas are shown to raise the average quality of imports, while the effects of tariffs are ambiguous.The third concerns the possibility of profit shifting protection which is welfare increasing. The welfare consequences of protection are analyzed in the third section, and are shown to depend crucially on the distribution of consumers.

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Document Object Identifier (DOI): 10.3386/w1537

Published: International Economic Review Volume 31, No.1 Feb 1990

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