This paper 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, within-industry...

We estimate a structural model of heterogeneous multiproduct firms to examine the sources of firm heterogeneity emphasized in the recent trade and macro literatures. Using Nielsen barcode data on prices and sales, we estimate elasticities of substitution within and between firms, and use the...

This paper reviews a new framework for analyzing the interrelationship between inequality, unemployment, labor market frictions, and foreign trade. This framework emphasizes firm heterogeneity and search and matching frictions in labor markets. It implies that the opening of trade may raise...

This Paper examines the relationship between foreign ownership and productivity, paying particular attention to two issues neglected in the existing literature – the role of multinationals in service sectors and the importance of R&D activity conducted by foreign multinationals. We review...

This paper is intended to make four main points that are relevant for previously planned economies in transition to a market economy. First, national output can be increased by reducing or eliminating relative price distortions through price reform and free trade and by thus enhancing...

Firms’ decisions about which goods to produce are often made at a more disaggregate level than the data observed by empirical researchers. When products differ according to production technique or the way in which they enter demand, this data aggregation problem introduces a bias into standard...

Empirical evidence seems to indicate that economic growth since 1965 has varied inversely with natural resource abundance across countries. This Paper proposes a linkage between abundant natural resources and economic growth, through saving and investment. When the share of output that accrues...

Privatization is shown to increase national economic output in a two-sector full-employment general-equilibrium model by enhancing efficiency as if a relative price distortion were being removed through price reform, trade liberalization, or stabilization. The static output gain from...

This paper reconsiders the relationship between inflation, economic growth and external debt, and discusses various channels through which (a) increased inflation tends to reduce growth and raise foreign indebtedness over time and (b) declining growth tends to amplify both inflation and debt....

Some channels through which increased inflation tends to reduce economic growth, and vice versa, are studied within a simple model incorporating money into an optimal growth framework with constant returns to capital. The model includes the potential impact of inflation on: (a) saving through...