“…The reason is that a reduction in the international relative price of local final goods implies, via a substitution effect in preferences, an increase in world-and local-demand for the local composite good, which in turn increases local production. On the contrary, in our model, when the increase is on the price of the intermediate importable-relative to the intermediate exportable-the units of labor 5 See also Corsetti andPesenti (2001, 2005), Devereux and Engel (2003), Benigno and Benigno (2003), Duarte andObstfeld (2008), Ferrero (2005), and Adao, Correia, and Teles (2009) required to import one unit of the intermediate importable increases and is therefore contractionary. Second, in the model without traded commodities, a shock to the terms of trade does not change local costs, so it does not interact in an interesting way with the domestic price frictions.…”