This paper presents an overview of co-patenting trends at the national and regional level in three technology fields (biotechnology, telecommunications and renewable energy), across regions in the OECD and emerging economies, from the late 1970s to the late 2000s. After a general introduction on...

Off-farm earnings account for a substantial and growing share of household income among smallholder farmers in most of Sub-Saharan Africa, but evidence concerning the effects of these earnings on investment in food production remains sparse. Conceptually, some factors may push farm families to...

In the coming decades, Sub-Saharan Africa (SSA) could see a major humanitarian crisis. If rapid population growth continues and agricultural productivity rises slowly or not at all,large increases in the working-age population and daunting problems of food supply, poverty,and underemployment...

Sorghum is one of the world’s most important cereals in terms of total production. Grown largely as livestock feed in the US, sorghum is a primary food staple and source of cash for smallholder farming families in the West African savannah. The dominant type of sorghum produced in this region...

This paper investigates the labor market effect of international migration on child work in countries of origin. We use an original cross-country survey dataset, which combines information on international migration with detailed individual-level data on child labor at age 5-14 in a wide range...

This paper studies how learning from neighboring firms affects new exporters\' performance. We develop a statistical decision model in which a firm updates its prior belief about demand in a foreign market based on several factors, including the number of neighbors currently selling there, the...

Especially in developing countries credit constraints are often perceived as one of the most important market frictions constraining firm innovation and growth. Huge amounts of public money are being devoted to the removal of such constraints but their effectiveness is still subject to an...

This paper estimates the causal effect of the prospect of legal status on the employment outcomes of undocumented immigrants. Our identification strategy exploits a natural experiment provided by the 2002 amnesty program in Italy that introduced an exogenous discontinuity in eligibility based on...

This paper develops a two-sector, two-factor trade model with labor market frictions in which workers search for a job also when they are employed. On the job search (OJS) is a key ingredient to explain the response to trade liberalization of sectoral employment, unemployment and wage i...