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Markups in the Model of Monopolistic Competition

Student: Anastasiya Maksimova

Supervisor: Alexander Osharin

Faculty: Faculty of Economics

Educational Programme: Economics (Bachelor)

Year of Graduation: 2016

The paper considers a two-country trade model of monopolistic competition featuring the heterogeneity of consumer preferences both within and across countries. The incorporation of heterogeneity into a traditional monopolistic competition setting is achieved by assuming different elasticities of substitution in the CES utility function for different consumers. The proposed setup expands on the traditional model of trade by demonstrating a richer set of country specific effects. The key question analysed in the paper is how consumer heterogeneity and trade liberalization affect markups and wages in different countries. Unlike the canonical CES-model of trade, where markups in different countries are constant and identical to each other, our model, by taking consumer heterogeneity into account, provides different markups across countries, incorporating both heterogeneity and trade specifics. The model also predicts that the larger of two countries engaged in costly trade may have a wage rate higher than, lower than or equal to that of the smaller one, depending on the general equilibrium conditions. This finding is in contrast to that of the canonical setting, where the larger country under costly trade always has a higher wage rate.

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