Lederman and Maloney trace the evolution of research and development (R&D) expenditures along the development process using a new global panel data set. They show that R&D effort measured as a share of GDP rises with development at an increasing rate. The authors examine how four groups of...

The United States imports around 25 percent of its merchandise under some form of preferential trade regime. The authors examine both the origins and consequences of U.S. trade preferences in the context of the gravity model of international trade. First, they provide estimates of the impact of...

Lederman and Maloney examine the empirical relationships between trade structure and economic growth, particularly the influence of natural resource abundance, export concentration, and intra-industry trade. They test the robustness of these relationships across proxies, control variables, and...

Recent research highlights the relationship between economic development and productive diversification, which may be hindered by market failures. After identifying stages of diversification in disaggregated export data, the authors develop a metric for the flows of export"discoveries,"or...

This paper examines the link between sectoral concentration and overall performance in the search for on-the-frontier innovations, inside-the-frontier innovations, and export booms. It extends the literature by increasing country coverage and the types of search processes considered, and by...

This paper examines the extent to which the growth of China and India in world markets is affecting the patterns of trade specialization in Latin American economies. The authors construct Vollrath's measure of revealed comparative advantage by 3-digit ISIC sector, country, and year. This measure...

Theories of international trade assume that all countries use similar and exogenous technologies in the production of any good. This paper relaxes this assumption. The marriage of literatures on biased technical change and trade yields a tractable theory, which predicts that differences in...

Using a new global data base on patents and innovation inputs, the authors examine the process of knowledge creation measured by the dynamic relationship between research and development and U.S. patents granted. They confirm at the country level the recurrent micro-level finding of a strong...

The United States imports around 25% of its merchandise under some form of preferential trade agreement. This paper examines the relative impacts of these programs on the value of imports from different trading partners. We address four technical but policy-relevant issues: (1) We consider not...

What makes the work of Sachs and Warner (1995a, 1997a, 1997b, 1999) distinct from previous pessimistic arguments about the growth potential of natural resources is their reliance on econometric analysis. Our aim is to take the authors’ model specification as given, but we ask the following...