Varieties and the Transfer Problem: The Extensive Margin of Current Account Adjustment

Working Paper: NBER ID: w13795

Authors: Giancarlo Corsetti; Philippe Martin; Paolo Pesenti

Abstract: Most analyses of the macroeconomic adjustment required to correct global imbalances ignore net exports of new varieties of goods and services and do not account for firms' entry in the product market. In this paper we revisit the macroeconomics of trade adjustment in the context of the classic 'transfer problem,' using a model where the set of exportables, importables and nontraded goods is endogenous. We show that exchange rate movements associated with adjustment are dramatically lower when the above features are accounted for, relative to traditional macromodels. We also find that, for reasonable parameterizations, consumption and employment (hence welfare) are not highly sensitive to product differentiation, and change little regardless of whether adjustment occurs through movements in relative prices or quantities. This result warns against interpreting the size of real depreciation associated with trade rebalancing as an index of macroeconomic distress.

Keywords: Current Account; Trade Adjustment; Macroeconomics; Product Differentiation

JEL Codes: F32; F41


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
extensive margin adjustments (F12)exchange rate movements (F31)
transfers (F16)terms of trade (F14)
current account transfers (F32)exchange rate adjustments (F31)
product differentiation (L15)consumption and employment (E20)

Back to index