According to the traditional theory, an exchange rate depreciation usually implies a real currency depreciation which increases the volume of exports. At least four conditions have to be verified for this effect to be observed: (1) The depreciation is not transmitted to domestic prices, (2) export prices are set in the exporter’s currency, (3) the foreign demand is sufficiently elastic (Marshall-Lerner condition), and (4) exporter’s supply is sufficiently elastic too.
This paper does not study the existence of those conditions, since previous studies have shown that they are likely to be observed. Nevertheless, several recent papers have underlined the non systematic character of the existence of J-Curve or competitiveness effect. Duttagupta and Spilimbergo (2004) study the Asian 1997-1998 currency crises and show that exports did not increase during this period. More generally, recent crises events (Argentina and Uruguay, 2002, Brazil 1999) underline this lack of reaction of exports to exchange rate shocks. Our study attempts to explain these stylized facts by studying the existing interactions between financial imperfections, exchange rate movements and the volume of exports. We show that, even if the four previous conditions are verified, a depreciation will have a less positive - or even a negative impact on exports, if financial market imperfections are present in the economy. Moreover, we also show that countries’ specialization and the depreciation’s magnitude may have to be taken into account to explain why the traditional competitiveness effect is not always observed.