In order to distinguish the impacts of technology adoption at the extensive margin from those at the intensive margin, in the empirical analyses we tested these hypotheses focusing on the differences among marginal adopters of tractor hiring services and nonadopters of similar characteristics....

A food demand system is proposed, based on demand for energy, variety, and tastes of foods. By specifying utility as an explicit function of these characteristics, the entire matrix of demand elasticities can be derived for n foods and one nonfood from prior specification of just four...

Computable general equilibrium (CGE) models are used widely in policy analysis. The purpose of this paper is to contribute to and facilitate the use of CGE models. The paper includes a detailed presentation of a “standard” CGE model (an equation-by-equation description) and its required...

Using a CGE (computable general equilibrium) model for Zimbabwe with 1991 as base period, this paper examines quantitatively the income and equity effects of macroeconomic reform measures in isolation and in conjunction with potentially complementary changes in agricultural sector policies. Some...

This theoretical paper intends to provide an explanation of the implementation of behind-the-border policies, border policies, and of the inefficiency of trade negotiations. We consider a general equilibrium model of international trade with two identical countries, two commodities, a...

Rice is a strategic commodity for food security in West Africa. Its consumption has grown rapidly over time as a result of population growth, urbanization, and increasing purchasing power. Dependency on imported rice exposes the region to external shocks stemming from the global market. Given...

The aim of this paper is to assess of the impact of the European Union’s trade preferences on global trade, focusing on several methodological issues that are relevant to the trade-creating impact of these preferences. Using highly disaggregated eight-digit data in a theoretically...

Africa’s recent economic growth is at a historical high, the patterns associated with this growth appear to be quite different from the Asian experiences where rapid growth was fueled by labor intensive, export-oriented manufacturing. Because this pattern differs with our typical view of...

The world’s population is expected to reach 9 billion by 2050. Climate change, population, and income growth will drive food demand in the coming decades. Baseline scenarios show food prices for maize, rice, and wheat would significantly increase between 2005 and 2050, and the number of...

Bioeconomic models can provide powerful insights into the interactions between people and the natural ecosystems on which they depend. For example, bioeconomic models of fisheries have long been used to provide early warnings about the sustainability of harvest levels or the impacts of new...