World Technology Usage Lags
---- Acknowledgements -----
The views expressed in this paper solely reflect those of the authors and not necessarily those of the National Bureau of Economic Research, Federal Reserve Bank of New York, nor those of the Federal Reserve System as a whole. We appreciate the financial assistance of the NSF (Grant # SES-0517910) and the C.V. Starr Center for Applied Economics. This research was completed while Bart Hobijn was a visiting scholar at the Graduate Center of the City University of New York and New York University. We would like to thank Mark Bils, Andres Rodríguez-Clare, Romain Wacziarg, and Matt Wiswall for comments and suggestions.