The textbook of International Economics by Krugman, Obstfeld and Melitz (2022) introduces the gains from trade under monopolistic competition with a simple linear demand model. We use its representative consumer foundation to decompose the welfare gains from a market expansion into competitive effects, variety effects and selection effects.
Bertoletti, P., Etro, F. (2025). Decomposing the Welfare Gains from Trade. ECONOMICS LETTERS, 247(February 2025) [10.1016/j.econlet.2025.112189].
Decomposing the Welfare Gains from Trade
Bertoletti, P;Etro, F
2025
Abstract
The textbook of International Economics by Krugman, Obstfeld and Melitz (2022) introduces the gains from trade under monopolistic competition with a simple linear demand model. We use its representative consumer foundation to decompose the welfare gains from a market expansion into competitive effects, variety effects and selection effects.
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