firms always have a higher market share, there is no monotonic relationship between firms' productivity level and their … effect”. Therefore, the incentive to add more products weakens as productivity rises. This leads to Lemma 3 in Feenstra and …

-exporters. It is argued that this exporter-productivity premium is due to extra cost of exporting that can be covered profitably by … than non-exporting firms from the same 4-digit industry both on average and over the whole productivity distribution …. However, many firms from the lower end of this distribution are exporters. This paper report that these low-productivity …

for first order stochastic dominance it is shown that, in line with this hypothesis, the productivity distribution of … guide empirical work on the relation between exports, R&D and productivity. …

-exporters. However, many firms from the lower end of the productivity distribution are exporters. Germany is a case in point. A recent … study reports that these low-productivity exporters are not marginal exporters defined according to the share of exports in … exports is much higher among exporters from the lower end of the productivity distribution than among highly productive …

-parametric test for first order stochastic dominance it is shown that, in line with this hypothesis, the productivity distribution of … productivity. …