Sunk costs of entry create a wedge between the real exchange rate for which a foreign exporter enters the domestic market, and that for which he exits. On the macroeconomic level, heterogeneous cost structures make the number of entry and exit thresholds approach a continuum: any movement of the real exchange rate beyond its historical peak triggers some entry or exit. A sufficiently large appreciation followed by an equivalent depreciation (a `cycle') could hysteretically affect the trade volume, because some exporters enter and stay. This paper investigates whether trade-volume hysteresis indeed occurs during such cycles, by testing for structural breaks in the constant term and the real exchange rate elasticity of the import volume in a standard import-volume specification. Binomial tests indicate that constant-term breaks have the sign predicted by hysteresis theory significantly more than 50% of the time. Breaks in the real exchange rate elasticity, on the other hand, have the `reverse' sign in significantly more than half of the cases.
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Find related papers by JEL classification: D57 - Microeconomics - - General Equilibrium and Disequilibrium - - - Input-Output Tables and Analysis F19 - International Economics - - Trade - - - Other F31 - International Economics - - International Finance - - - Foreign Exchange F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
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