This paper constructs a model of non-balanced economic growth. The main economic force is the combination of differences in factor proportions and capital deepening. Capital deepening tends to increase the relative output of the sector with a greater capital share, but simultaneously induces a...

According to national accounts data, value added per worker is much higher in the non-agricultural sector than in agriculture in the typical country, and particularly so in developing countries. Taken at face value, this "agricultural productivity gap" suggests that labor is greatly misallocated...

This paper contrasts the properties of dynamic Heckscher-Ohlin models with overlapping generations with those of models with infinitely lived consumers. In both environments, if capital is mobile across countries, factor price equalization occurs after the initial period. In general, however,...

This paper studies the properties of a dynamic Heckscher-Ohlin model - a combination of a static two-good, two-factor Heckscher-Ohlin trade model and a two-sector growth model - with infinitely lived consumers where international borrowing and lending are not permitted. We obtain two main...

Internet advertising has been the fastest growing advertising channel in recent years with paid search ads comprising the bulk of this revenue. We present results from a series of large scale field experiments done at eBay that were designed to measure the causal effectiveness of paid search...

This paper investigates the urbanization of the Indian manufacturing sector by combining enterprise data from formal and informal sectors. We find that plants in the formal sector are moving away from urban and into rural locations, while the informal sector is moving from rural to urban...

Medicare Part D presents a novel privatized structure for a government pharmaceutical benefit. Incentives for firms to provide low prices and high quality are generated by consumers who choose among multiple insurance plans in each market. To date the literature has primarily focused on...

Regulations aimed at curbing the entry of large retail stores have been introduced in many countries to protect independent retailers. Analyzing a planning reform launched in the United Kingdom in the 1990s, I show that independent retailers were actually harmed by the creation of entry barriers...