Researchers interested in estimating productivity can choose from an array of methodologies, each with its strengths and weaknesses. Methods differ by the assumptions they rely on and imply very different calculations. I compare five widely used techniques: (a) index numbers, (b) data...

Proponents of trade liberalization argue that it will force firms to produce closer to the production possibility frontier and that the frontier will move out faster. In particular, plants that export will achieve a higher productivity level. However intuitive the argument, empirical evidence is...

For small open economies, it is essential that many firms find their way to the export market and most governments provide some form of export promotion assistance. We use detailed firm-level data for Flanders, the largest region in Belgium, to evaluate whether its program raises firms'...

In the global recession of 2009, exports declined precipitously in many countries. We illustrate with firm-level data for Belgium and Peru that the decline was very sudden and almost entirely due to lower export sales by existing exporters. After the recession, exports rebounded almost equally...