The Internet plays a growing role in the economy. This paper extrapolates this trend and analyses a world where most … greater hit score increases market size. A selection effect by which consumers are more picky and select higher quality goods …

We survey the literatures on the economic consequences of the structure of social networks. We develop a taxonomy of … 'macro' and 'micro' characteristics of social inter-action networks and discuss both the theoretical and empirical findings … discuss the challenges of accounting for the endogeneity of networks in assessing the relationship between the patterns of …

To better understand the way social networks operate in the labor market, we propose two simple models where … strength of weak ties in finding a job because they involve a secondary ring of acquaintances who have contacts with networks …

simple model we show that the power of elections as a selection and incentive device can be improved by requiring higher vote …

innovation activities. The selection of high-skill managers is more important for innovation activities. As the economy … approaches the technology frontier, selection becomes more important. As a result, countries at early stages of development … investments, but little selection. Closer to the world technology frontier, there is a switch to an innovation-based strategy with …

-migrant. Although migrants lose their original social networks whilst overseas, savings and human capital accumulation acquired abroad … over-compensate for this loss. Our results also suggest that social networks have no significant impact on becoming …

between them. The model can replicate stylised facts about sorting, agglomeration, and selection in cities. It can also …

-product-destination data. By taking firm-product level selection into account we show that export unit values increase with distance even for … particular firm-product combinations. This cannot be explained by models assuming firm- or even firm-product level selection and …