Journal of Monetary Economics, 2008, Vol. 55, pp. 1054-1066. With M. Galenianos. We characterize price dispersion and welfare in a monetary model with private information: inflation is regressive even though the rich hold more money. Go to paper

Econometrica, 2019 87(4): 1081-1113. With J. Greenwood, C. Santos and M. Tertilt A calibrated equilibrium search model of an HIV/AIDS epidemic is developed to analyze the direct impact and the behavioral adjustment to policies. Go to paper

Econometrica. 2018 86(1): 85-132. With Jan Eeckhout. When heterogeneous firms can choose both how many and which workers to hire, we illustrate consequences for firm-size and wage inequality. Note a correction for the condition with capital: corrigendum. Go to paper

Journal of Economic Literature, 2021 59(1): 90-148. With R. Wright,B. Julien, and V. Guerrieri. This survey presents a comprehensive overview of the directed/competitive search literature. Go to paper

Journal of Economic Theory, 2009, 114(2), pp. 445-471. With Manolis Galenianos. We study wage dispersion and (in)efficiency in directed search when workers can strategically apply for multiple jobs but firms can only make one offer. Go to paper

Journal of Political Economy, 2009, Vol. 117(5), pp. 861- 913. In a directed search where workers apply for multiple jobs and are then allocated via a stable matching, efficiency arises at all stages. Go to paper

Econometrica, 2015, Vol 83 (5), 1849-1875. With K. Kim. [online appendix] We introduce cheap-talk into a market game and study if the equilibrium can replicate the constraint efficient allocation under (reserve) price posting. Go to paper

American Economic Review, 2015, Vol 105 (10), 3030-3060. With Leo Kaas. We propose a tractable competitive search model with heterogeneous multi-worker firms, and investigate firm growth and business cycles. Go to paper

American Economic Journal - Macroeconomics, 2022, 14(4), 1-97, with Michèle Belot and Paul Muller. In a field experiment, we study how job seekers respond to posted wages by randomly assigning wages randomly to pairs of otherwise similar vacancies in a large number of professions, which generates significantly more but not exclusive interest at higher wages. Go to paper

Review of Economic Studies, 2011, Vol. 78 (3), 872-906. With Jan Eeckhout. Wage and employment data can identify the strength of sorting in search models, though two-sided fixed effects are always mis-specified. Go to paper

Economic Journal, 2021 131: 713-744. With Ericson, Spinnewijn &, Starc Demand for insurance can be driven by high risk aversion or high risk, and we show how to separate the two using observed market shares. Go to paper