We develop a model of international trade with export quality requirements and two dimensions of rm heterogeneity. In addition to \productivity", rms are also heterogeneous in their \caliber" { the ability to produce quality using fewer xed inputs. Compared to single-attribute models of rm...

Many Sub-Saharan African countries are highly dependent on the agricultural sector for the livelihood of the population. Agriculture is source of livelihood for 64 percent of the population in the region; the sector contributes about one-fifth of total gross domestic product, and about 12 per...

Numerous studies have investigated the link between trade policy and firm productivity. Despite justifying firm level analysis on the basis of considerable heterogeneity between firms within narrowly defined industries, these studies typically constrain all firms to have the same expected...

This paper investigates how input trade liberalization affects fi rm-level wage inequality between skilled and unskilled labor. A fall in input tariffs generates increased fi rm pro fits, which, in turn, widens wage inequality since skilled labor enjoys a larger proportion of the incremental pro...

The aim of the research presented in this paper is to assess the competitive potential of Polish agriculture (potential competitiveness) and the competitive position of the Polish agri-food sector on the Single European Market (SEM) with reference to the global context. The conducted research...

This chapter reviews the new approach to international trade based on firm heterogeneity in differentiated product markets. This approach explains a variety of features exhibited in disaggregated trade data, including the higher productivity of exporters relative to non-exporters,...

We measure the "new" gains from trade reaped by Canada as a result of the Canada-US Free Trade Agreement (CUSFTA). We think of the "new" gains from trade of a country as all welfare effects pertaining to changes in the set of firms serving that country as emphasized in the so-called "new" trade...

Does fragmentation of production affect the trade patterns of different countries in similar ways? In contrast with current theories of vertical specialization, attempts to provide empirical evidence on this question have been based, in the vast majority of cases, only on a statistical analysis...

This paper uses firm-level data for Mexican exporters to understand how firm-level export decisions shape a country's aggregate exports. The data allows for a characterization of both the crosssectional distribution of Mexican exports, across destinations and across exporting firms, and of the...