, and the World Bank for very helpful comments. We also thank Jenny Nuñez, Luis Cerpa, the Chilean Customs Authority, and the Instituto Nacional de Estadísticas for assistance with building the dataset. All errors are our own. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research. Andres Zahler acknowledges the Nucleo Milenio Initiative NS100017 "Intelis Centre" for partial funding. NBER working papers are circulated for discussion and comment purposes. They have not been peer-reviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications.

Exporting firms often enter foreign markets that are similar to their previous export destinations. We develop a dynamic model in which a firm’s exports in a market may depend on how similar the market is to the firm’s home country (gravity) and to its previous export destinations (extended gravity). Given the large number of export paths from which forward-looking firms may choose, we use a moment inequality approach to estimate our model. Our estimates indicate that sharing similarities with a prior export destination in terms of geographic location, language, and income per capita jointly reduces the cost of foreign market entry by 69–90%. Reductions due to geographic location (25–38%) and language (29–36%) have the largest effect. Extended gravity thus has a large impact on export entry costs.

Artículo de publicación ISISin acceso a texto completoWe analyze empirically the firm-level relationship between innovation and productivity in the Chilean service sector using the manufacturing sector as a benchmark. We find that manufacturing and service industries have similar determinants of the probability of introducing technological innovations. We also find a positive effect of technological and nontechnological innovation on labor productivity for both sectors. However, there are some differences in the quantitative importance of some determinants of innovation. Our findings help to characterize the different stages of the service industry's innovative process and its effect on an emerging economy, providing useful information for policy design.Millennium Science Initiative NS 10001

Since Arrow (1962), spillovers from pioneer to follower in non-excludable innovations are central to our understanding of endogenous economic growth. Nonetheless, evidence of these spillovers in less-developed economies has been elusive. Our paper contributes by showing novel facts consistent with externalities in new export products. To avoid biases towards ex-post successes, we use data on the universe of customs transactions from Chile (1990Chile ( -2006. We nd that, rst, follower rms are more likely to enter a product if the pioneer rm survives exporting. More importantly, we also nd that pioneers enter and remain smaller than followers, which is indicative that the rst exporter may not be the rm that bene ts the most from the discovery. This fact is inconsistent with the currently standard view in international trade, in which the largest rm would be the rst willing to pay a homogeneous sunk cost of exporting. In contrast, our facts are consistent with the view that smaller pioneer exporters are data producers , whose spillovers bene t larger followers. We o er a simple model to formalize this intuition, based on the idea that large exporters have more choices on how to allocate their managerial capacity. This real option makes large exporters wait, as to assign their marginal manager on the best possible project. In contrast, smaller and more focused rms prefer to be pioneers. JEL classi cation: L26 ; F14; O4.