%0 Journal Article %J Revised Sept. 2022 %D Working Paper %T Unobserved Heterogeneity, State Dependence, and Health Plan Choices %A Ariel Pakes %A Jack Porter %A Mark Shepard %A Calder-Wang, Sophie %B Revised Sept. 2022 %G eng %0 Book Section %B Handbook of Industrial Organization, Kate Ho, Ali Hortascu, and Alessandro Lizerri editors %D Forthcoming %T Moment Inequalities and Partial Identification in Industrial Organization %A Brendan Kline %A Ariel Pakes %A Elie Tamer %B Handbook of Industrial Organization, Kate Ho, Ali Hortascu, and Alessandro Lizerri editors %G eng %0 Journal Article %J Review of Economic Studies %D Forthcoming %T Inference for Linear Conditional Moment Inequalities %A Isaiah Andrews %A Jonathan Roth %A Ariel Pakes %B Review of Economic Studies %G eng %0 Journal Article %J Quantitative Economics %D 2024 %T Moment Inequalities for Multinomial Choice with Fixed Effects %A Ariel Pakes %A Jack Porter %B Quantitative Economics %V 15 %P 1-25 %G eng %N 1 %0 Journal Article %J Journal of Economics and Management Strategy %D 2023 %T The Impact of AI Design on Pricing %A John Asker %A Chaim Fershtman %A Ariel Pakes %B Journal of Economics and Management Strategy %P 1-29 %G eng %0 Journal Article %J AER, Papers and Proceedings %D 2022 %T Artifi cial Intelligence, Algorithm Design and Pricing %A John Asker %A Chaim Fershtman %A Ariel Pakes %B AER, Papers and Proceedings %V 112 %P 452-456 %G eng %N May %0 Journal Article %J Annual Review of Economics %D 2021 %T A Helicopter Tour of Some Underlying Issues in Empirical Industrial Organization %A Pakes, A. %B Annual Review of Economics %V 13 %P 397-421 %G eng %0 Journal Article %J RAND Journal of Economics %D 2020 %T A Computational Framework for Analyzing Dynamic Procurement Auctions: The Market Impact of Information Sharing %A John Asker %A Chaim Fershtman %A Jihye Jeon %A Ariel Pakes %B RAND Journal of Economics %V 51 %P 805-839 %G eng %N 3 %0 Journal Article %J Journal of Economics Perspectives %D 2019 %T Parag Pathak: Winner of the 2018 Clark Medal %A Ariel Pakes %A Joel Sobel %B Journal of Economics Perspectives %V 33 %P 231-246 %G eng %N 1 %0 Journal Article %J Review of Industrial Organization %D 2018 %T The Evolution of Health Insurer Costs in Massachusetts, 2010-12 %A Kate Ho %A Ariel Pakes %A Mark Shepard %B Review of Industrial Organization %V 53 %P 117-137 %G eng %N 1 %0 Journal Article %J American Economic Review %D 2018 %T Just Starting Out: Learning and Equilibrium in a New Market %A Ulrich Doraszelski %A Greg Lewis %A Ariel Pakes %B American Economic Review %V 108 %P 565-615 %G eng %N 3 %0 Generic %D 2017 %T Empirical Tools and Competition Analysis: Past Progress and Current Problems. %A Ariel Pakes %X

I review a subset of the empirical tools available for competition analysis. The tools discussed are those needed for the empirical analysis of; demand, production efficiency, product repositioning, and the evolution of market structure. Where relevant I start with a brief review of tools developed in the 1990’s that have recently been incorporated into the analysis of actual policy. The focus is on providing an overview of new developments; both those that are easy to implement, and those that are not quite at that stage yet show promise.

%B International Journal of Industrial Organization %V 53 %P 241-266 %G eng %U https://authors.elsevier.com/a/1VRsJc8eEWTmF %0 Book Section %B Advances in Dynamic and Evolutionary Games: Theory, Applications, and Numerical Methods %D 2016 %T Methodological Issues in Analyzing Market Dynamics %A Ariel Pakes %X

This paper investigates progress in the development of models capable of empirically analyzing the evolution of industries. It starts with a parallel between the development of empirical frameworks for static and dynamic analysis of industries: both adapted their frameworks from models taken from economic theory. The dynamic framework has had its successes: it led to developments that have enabled us to control for dynamic phenomena in static empirical models and to useful computational theory. However when important characteristics of industries were integrated into that framework it generated complexities which both hindered empirical work on dynamics per se, and made it unrealistic as a model of agent behavior. This paper suggests a simpler alternative paradigm, one which need not maintain all the traditional theoretical restrictions, but does maintain the core theoretical idea of optimizing subject to an information set. It then discusses estimation, computation, and an example within that paradigm.

%B Advances in Dynamic and Evolutionary Games: Theory, Applications, and Numerical Methods %7 F. Thuijsman & F. Wagener (eds.) %I Springer International Publishing %C Switzerland %P 43-75 %G eng %0 Journal Article %J Econometrica %D 2015 %T Moment Inequalities and Their Application %A Ariel Pakes %A Jack Porter %A Katherine Ho %A Joy Ishii %B Econometrica %V 83 %P 315-334 %G eng %N 1 %0 Journal Article %J American Economic Review %D 2014 %T Hospital Choices, Hospital Prices, and Financial Incentives to Physicians %A Kate Ho %A Ariel Pakes %X

We estimate an insurer-speci…c preference function which rationalizes hospital referrals for privately-insured births in California. The function is additively separable in: a hospital price paid by the insurer, the distance traveled, and plan and severity-speci…c hospital …xed e¤ects (capturing hospital quality). We use an inequality estimator that allows for errors in price and detailed hospital-severity interactions and obtain markedly di¤erent results than those from a logit. The estimates indicate that insurers with more capitated physicians are more responsive to price. Capitated plans send patients further to utilize similar-quality lower-priced hospitals; but the cost-quality trade-o¤ does not vary with capitation rates.

%B American Economic Review %V 104 %P 3841-3884 %G eng %N 12 %0 Journal Article %J American Economic Review Paper and Proceedings %D 2014 %T

Physician Payment Reform and Hospital Referrals

%A Kate Ho %A Ariel Pakes %B American Economic Review Paper and Proceedings %V 104 %P 200-205 %G eng %U https://www.aeaweb.org/atypon.php?return_to=/doi/pdfplus/10.1257/aer.104.5.200 %N 5 %0 Journal Article %J International Economic Review %D 2014 %T Behavioral and Descriptive Forms of Choice Models %A Ariel Pakes %B International Economic Review %V 55 %P 603-624 %G eng %N 3 %0 Journal Article %J Quarterly Journal of Economics %D 2012 %T Dynamic Games with Asymmetric Information: A Framework for Empirical Work %A Chaim Fershtman %A Ariel Pakes %B Quarterly Journal of Economics %V 127 %P 1611-1661 %G eng %N 4 %0 Journal Article %J International Journal of Industrial Organization %D 2011 %T Do Physician Incentives Affect Hospital Choice? A Progress Report %A Katherine Ho %A Ariel Pakes %B International Journal of Industrial Organization %V 29 %P 317-322 %G eng %N 3 %0 Journal Article %J American Economic Review %D 2011 %T An Experimental Component Index for the CPI: From Annual Computer Data to Monthly Data on Other Goods %A Timothy Erickson %A Ariel Pakes %B American Economic Review %V 101 %P 1707-1738 %G eng %N 5 %0 Journal Article %J Econometrica %D 2010 %T Alternative Models for Moment Inequalities %A Ariel Pakes %B Econometrica %V 78 %P 1783-1822 %G eng %N 6 %0 Journal Article %J Economic Letters %D 2009 %T Multiple Equilibria and Selection by Learning in an Applied Setting %A Robin S. Lee %A Ariel Pakes %B Economic Letters %V 104 %P 13-16 %G eng %N 1 %0 Book Section %B The Growth of Employment on Southeast Asia %D 2008 %T Factor Utilization in Indian Manufacturing: A Look at the World Bank Investment Climate Surveys Data %A Ana M. Fernandes %A Ariel Pakes %B The Growth of Employment on Southeast Asia %I The World Bank %G eng %0 Generic %D 2008 %T Theory and Empirical Work on Imperfectly Competitive Markets %A Ariel Pakes %G eng %0 Book Section %B The Handbook of Industrial Organization %D 2007 %T A Framework for Applied Dynamic Analysis in IO %A Ulirich Doraszelski %A Ariel Pakes %E Mark Armstrong %E Robert Porter %B The Handbook of Industrial Organization %I Elsevier %C New York %V 3 %P Chapter 33 2183-2162 %G eng %0 Journal Article %J International Economic Review %D 2007 %T The Pure Characteristics Demand Model %A Steve Berry %A Ariel Pakes %B International Economic Review %V 48 %P 1193-1225 %G eng %N 4 %0 Book Section %B The Handbook of Econometrics %D 2007 %T Econometric Tools for Analyzing Market Outcomes %A Daniel Ackerberg %A Lanier Benkard %A Steven Berry %A Ariel Pakes %E J. Heckman %E E. Leamer %B The Handbook of Econometrics %I North-Holland %C Amsterdam %V 6A %P 4171-4276 %G eng %0 Journal Article %J RAND Journal of Economics %D 2007 %T Simple Estimators for the Parameters of Discrete Dynamic Games (with Entry / Exit Examples) %A Ariel Pakes %A Michael Ostrovsky %A Steve Berry %B RAND Journal of Economics %V 38 %P 373-399 %G eng %N 2 %0 Journal Article %J Annales d'Economie et de Statistique %D 2005 %T Hedonics and the Consumer Price Index %A Ariel Pakes %B Annales d'Economie et de Statistique %V 79-80 %P 729-749 %G eng %0 Journal Article %J Journal of Political Economy %D 2004 %T Differentiated Products Demand Systems from a Combination of Micro and Macro Data: The New Car Market %A Steve Berry %A James Levinsohn %A Ariel Pakes %B Journal of Political Economy %V 112 %P 68-105 %G eng %N 1 %0 Journal Article %J Review of Economic Studies %D 2004 %T Limit Theorems for Estimating the Parameters of Differentiated Product Demand Systems %A Steve Berry %A Oliver B. Linton %A Ariel Pakes %B Review of Economic Studies %V 71 %P 613-654 %G eng %N 3 %0 Journal Article %J Review of Industrial Organization %D 2004 %T Common Sense and Simplicity in Empirical Industrial Organization %A Ariel Pakes %B Review of Industrial Organization %C Symphony Hall, Boston %V 23 %P 193-215 %8 5 Apr. %G eng %0 Journal Article %J American Economic Review %D 2003 %T A Reconsideration of Hedonic Price Indexes with an Application to PC's %A Ariel Pakes %B American Economic Review %V 93 %P 1578-1596 %G eng %N 5 %0 Journal Article %J Econometrica %D 2001 %T Stochastic Approximation for Dynamic Analysis: Markov Perfect Equilibrium and the 'Curse' of Dimensionality %A Ariel Pakes %A Paul McGuire %B Econometrica %V 69 %P 1261-1281 %G eng %N 5 %0 Generic %D 2000 %T Estimation from the Optimality Conditions for Dynamic Controls %A Steve Berry %A Ariel Pakes %G eng %0 Conference Paper %B Economist's Perspectives on Antitrust %D 1997 %T New Economic Tools for Merger Analysis %A Ariel Pakes %B Economist's Perspectives on Antitrust %I Charles River Associates Inc. %8 April 1997 %G eng