This paper develops a simple model in which uncertainty about future tax policy leads to a temporary reduction in investment. The basic idea is that policy uncertainty creates uncertainty about the profitability of investment. If the uncertainty is likely to be resolved in the not-too-distant...

This paper presents a parsimonious equilibrium business cycle model with trade frictions in the product and labor markets. The model features unemployment and unsold production and its general equilibrium can be represented very simply: as the intersection of an aggregate supply and an aggregate...

Taking a look at sectoral macroeconomic data, this paper motivates the importance of (i) structural change, (ii) biased technical change and (iii) non-homotheticity of preferences. We provide a tractable theory of directed technical change where households have non-homothetic preferences and...

This paper examines the optimal design of recommendation systems. Given the option value of experimentation, short-run consumers' incentives to experiment are too low; the social planner can encourage experimentation by providing selective information to the consumers, in the form of a...

We show that the organization of production among firms in an economy has important implications for the impact of financial frictions. We set up a model in which firms use output of other firms as inputs for their own production. We allow for arbitrary network structures such that aggregate...

This paper investigates how features of the business cycle interact with technological restrictions at the firm level to generate dispersion in marginal products of ex ante identical firms. The model is able to deliver a non-monotonic relationship between dispersion in marginal products,...

This paper demonstrates that the interactions of firm-level indivisible investments give rise to aggregate fluctuations without aggregate exogenous shocks. I develop a method to derive the distribution of aggregate capital growth rate by embedding a fictitious tatonnement in a branching process....

Importers rarely observe the price of every good in every market because of informational frictions. In this paper, we aim to explain how the presence of such frictions shapes the pattern of trade across countries. To this end, we introduce rationally inattentive importers in the Ricardian trade...

We study the extent to which firms from China and India use capital markets to obtain financing and grow. Using a unique data set on domestic and international capital raising activity and performance, we find that the expansion of financial market activity since the 1990s has been much more...

This paper evaluates the global welfare impact of China's trade integration and technological change in a multi-country quantitative Ricardian-Heckscher-Ohlin model. We simulate two alternative growth scenarios: a balanced one in which China's productivity grows at the same rate in each sector,...