". Productivity is modeled as is standard in the literature. Caliber is the ability to produce quality using few fixed inputs. While … to single-attribute models of firm heterogeneity emphasizing either productivity or the ability to produce quality, our …We develop a model of international trade with two sources of firm heterogeneity: "productivity" and "caliber …

different possible equilibria. Depending on how costly trade is relative to innovation, medium-productivity firms may either … export without innovating, innovate without exporting, do both or do neither. The impact of trade on aggregate productivity …, aggregate productivity need not always increase. After calibrating the model to five European countries, we show that the …

countries; and their productivity levels are above those of non-exporters, but below those of firms having both domestic sales …

increase productivity, and thereby exports, through better complementarity of inputs, transfer of technology and/or decreased … on firms' productivity, the link between imported intermediate inputs and export scope has not been made. This paper … bridges the gap by studying the impact of imported inputs on the margins of exports. We use a unique firms' level database of …

. Higher costs of employment decrease operating profits and lead to a higher productivity threshold level required for entering …

in the import tariff induces an incumbent importer/exporter to increase the quality of its exports and to raise its …'s producers to upgrade the quality of the goods that they export. The paper first documents two stylized facts regarding the …'s (2003) model of trade with heterogeneous firms by introducing endogenous quality choice. The model predicts that a reduction …

Policies to stimulate export growth and diversify the composition of exports in South Africa are now high on the …

-city areas. Standard empirical tests of the new trade models consistently find productivity-based ex ante self selection by … also goes along with positive productivity sorting. Ignoring this leads to upwardly biased estimates of the effect of … hypothesis. I find evidence that positive productivity self-selection is based on the combined effects of agglomeration and …

This paper presents an analysis of the crucial relationship between innovation, productivity, and export in SMEs. The …. Conscious selfselection on willing to export is revealed by simultaneously endogeneizing productivity and innovation output …

international diffusion through trade. Fitting the model to data on innovation, productivity, and trade in varieties, I find that …