This paper documents a decreasing trend in the geographical concentration of EU agrofood imports. Decomposing the concentration indices into intensive and extensive margins components, we find that the decrease in overall concentration indices results from two diverging trends: the pattern of...

This paper explores the evolution of OECD imports over time and as a function of income levels, measuring the concentration of those imports across origin countries at the product level. We find evidence of diversification followed, in the very last years of the sample period (post-2000), by a...

This paper estimates the effect of the decision to import intermediate goods and capital equipment on Total Factor Productivity (TFP) at the firm level on a panel of Spanish firms (1991-2002). We use two alternative approaches. In the first, we estimate TFP and apply a diff-in-diff estimator...

This paper estimates the effect of the decision to import intermediate goods and capital equipment on Total Factor Productivity (TFP) at the firm level on a panel of Spanish firms covering the period between 1991 and 2002. We use two alternative approaches. In the first, we estimate TFP using...

The paper explores the evolution of export diversification patterns along the economic development path. Using a large database with 156 countries over 19 years at the HS6 level of disaggregation (4’991 product lines) we look for action at the “intensive” and “extensive” margins...

This paper reviews the evidence on the determinants of subsistence agriculture and the barriers that farmers face to switch to market-oriented agriculture. We review a number of recent empirical approaches to the estimation of variable, fixed, and sunk transaction costs, with the weight of the...