Nicholas Bloom

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This paper investigates the relationship between product market competition (PMC) and innovation. A growth model is developed in which competition may increase the incremental profit from innovating; on the other hand, competition may also reduce innovation incentives for laggards. There are four key predictions. First, the relationship between product(More)
Many commentators argue that uncertainty about fiscal, monetary and regulatory policy slowed recovery from the 2007-2009 recession. To assess this view, we develop a new index of economic policy uncertainty (EPU) that draws on the frequency of newspaper references to policy uncertainty and other indicators. Our index spikes near tight presidential(More)
We propose uncertainty shocks as a new shock that drives business cycles. First, we demonstrate that microeconomic uncertainty is robustly countercyclical, rising sharply during recessions, particularly during the Great Recession of 2007-2009. Second, we quantify the impact of time-varying uncertainty on the economy in a dynamic stochastic general(More)
A long standing question in social science is whether management matters. Certainly management differs across firms, as does performance. However, perhaps every firm chooses its management practices optimally, so that differences across firms simply reflect differences in their environments. To investigate this we run a field experiment on large Indian(More)
The impact of R&D on growth through spillovers has been a major topic of economic research over the last thirty years. A central problem in the literature is that firm performance is affected by two countervailing “spillovers”: a positive effect from technological knowledge spillovers and negative business stealing effects from product market rivals. We(More)
We examine the impact of Chinese import competition on patenting, IT, R&D and TFP using a panel of half a million firms 1996-2007. We correct for endogeneity using the removal of product-specific quotas following China’s entry into the World Trade Organization. Chinese import competition led to both within firm technology upgrading and between firm(More)
About 10% of US employees now regularly work from home (WFH), but there are concerns this can lead to “shirking from home.” We report the results of a WFH experiment at CTrip, a 16,000employee, NASDAQ-listed Chinese travel agency. Call center employees who volunteered to WFH were randomly assigned to work from home or in the office for 9 months. Home(More)
Empirical studies on information communication technologies (ICT) typically aggregate the “information” and “communication” components together. We show theoretically and empirically that these have very different effects on the empowerment of employees, and by extension on wage inequality. If managerial hierarchies are devices to acquire and transmit(More)
This paper shows that, contrary to common beliefs, the real options effect of uncertainty plays no role in the long run rate of investment. This is proven for both the standard investment model with Cobb-Douglas production and Brownian motion demand, and also for a broader class of models with multiple lines of capital, labor and general demand stochastics.(More)