IDEAS home Printed from https://ideas.repec.org/p/cpr/ceprdp/18963.html
   My bibliography  Save this paper

The Dominant Role of Expectations and Broad-Based Supply Shocks in Driving Inflation

Author

Listed:
  • Beaudry, Paul
  • Hou, Chenyu
  • Portier, Franck

Abstract

The object of this paper is to assess the role of supply shocks, labour market tightness and expectation formation in explaining bouts of inflation. We begin by showing that a quasi-flat Phillips curve, which was popular prior to the pandemic, still fits the post-2020 US data well and that changes in short term inflation expectations induced by supply shocks likely played a major role in the recent inflation episode. We then document features of the joint dynamics of inflation and inflation expectations. Given the difficulty of reproducing these dynamics under rational expectations, we propose and evaluate a model with imperfect information and bounded rationality. In our model, agents see sectoral inflations as being driven by a component common to all the sectors of the economy and by sector-specific shocks. When supply shocks affect many sectors (what we refer to as a broad-based supply shock), agents infer that the common component of inflation has increased, which drive persistent inflation dynamics through their effect of expectations. We show that departure from full rationality is minor, but that it is enough for broad-based supply shocks to be amplified and propagated over time in a manner needed to explain the data.

Suggested Citation

  • Beaudry, Paul & Hou, Chenyu & Portier, Franck, 2024. "The Dominant Role of Expectations and Broad-Based Supply Shocks in Driving Inflation," CEPR Discussion Papers 18963, C.E.P.R. Discussion Papers.
  • Handle: RePEc:cpr:ceprdp:18963
    as

    Download full text from publisher

    File URL: https://cepr.org/publications/DP18963
    Download Restriction: CEPR Discussion Papers are free to download for our researchers, subscribers and members. If you fall into one of these categories but have trouble downloading our papers, please contact us at subscribers@cepr.org
    ---><---

    As the access to this document is restricted, you may want to look for a different version below or search for a different version of it.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Xavier Gabaix, 2014. "A Sparsity-Based Model of Bounded Rationality," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 129(4), pages 1661-1710.
    2. Jonathon Hazell & Juan Herreño & Emi Nakamura & Jón Steinsson, 2022. "The Slope of the Phillips Curve: Evidence from U.S. States," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 137(3), pages 1299-1344.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Afsar, Atahan & Gallegos, José-Elías & Jaimes, Richard & Silgado-Gómez, Edgar, 2024. "A behavioral hybrid New Keynesian model: Quantifying the importance of belief formation frictions," Economic Modelling, Elsevier, vol. 132(C).
    2. George-Marios Angeletos & Chen Lian, 2018. "Forward Guidance without Common Knowledge," American Economic Review, American Economic Association, vol. 108(9), pages 2477-2512, September.
    3. Marco Del Negro & Michele Lenza & Giorgio E. Primiceri & Andrea Tambalotti, 2020. "What's Up with the Phillips Curve?," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 51(1 (Spring), pages 301-373.
    4. Atahan Afsar; José Elías Gallegos; Richard Jaimes; Edgar Silgado Gómez & José Elías Gallegos & Richard Jaimes & Edgar Silgado Gómez, 2020. "Reconciling Empirics and Theory: The Behavioral Hybrid New Keynesian Model," Vniversitas Económica 18560, Universidad Javeriana - Bogotá.
    5. Philippe Jehiel, 2022. "Analogy-Based Expectation Equilibrium and Related Concepts:Theory, Applications, and Beyond," Working Papers halshs-03735680, HAL.
    6. Fatemeh Mokhtarzadeh & Luba Petersen, 2021. "Coordinating expectations through central bank projections," Experimental Economics, Springer;Economic Science Association, vol. 24(3), pages 883-918, September.
    7. El-Shagi, Makram & Tochkov, Kiril, 2024. "Regional heterogeneity and the provincial Phillips curve in China," Economic Analysis and Policy, Elsevier, vol. 81(C), pages 1036-1044.
    8. Theresa Kuchler & Basit Zafar, 2019. "Personal Experiences and Expectations about Aggregate Outcomes," Journal of Finance, American Finance Association, vol. 74(5), pages 2491-2542, October.
    9. Francesco Bianchi & Giovanni Nicolo & Dongho Song, 2023. "Inflation and Real Activity over the Business Cycle," Finance and Economics Discussion Series 2023-038, Board of Governors of the Federal Reserve System (U.S.).
    10. Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, 2020. "Memory, Attention, and Choice," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 135(3), pages 1399-1442.
    11. Eduardo Dávila & Ansgar Walther, 2021. "Corrective Regulation with Imperfect Instruments," NBER Working Papers 29160, National Bureau of Economic Research, Inc.
    12. Nicola Gennaioli & Alberto Martin & Stefano Rossi, 2014. "Sovereign Default, Domestic Banks, and Financial Institutions," Journal of Finance, American Finance Association, vol. 69(2), pages 819-866, April.
    13. Eliaz, Kfir & Spiegler, Ran, 2022. "On incentive-compatible estimators," Games and Economic Behavior, Elsevier, vol. 132(C), pages 204-220.
    14. Kohlscheen, Emanuel & Moessner, Richhild, 2022. "Globalisation and the slope of the Phillips curve," Economics Letters, Elsevier, vol. 216(C).
    15. Benchimol, Jonathan & Bounader, Lahcen, 2023. "Optimal monetary policy under bounded rationality," Journal of Financial Stability, Elsevier, vol. 67(C).
    16. Schuster, Florian & Krahé, Max & Sigl-Glöckner, Philippa, 2021. "Wird die Konjunkturkomponente der Schuldenbremse in ihrer heutigen Ausgestaltung ihrer Aufgabe noch gerecht? Analyse und ein Reformvorschlag," Papers 277885, Dezernat Zukunft - Institute for Macrofinance, Berlin.
    17. Quemin, Simon & Trotignon, Raphaël, 2021. "Emissions trading with rolling horizons," Journal of Economic Dynamics and Control, Elsevier, vol. 125(C).
    18. Jonathon Hazell, 2024. "Comment on "The Dominant Role of Expectations and Broad Based Supply Shocks in Driving Inflation"," NBER Chapters, in: NBER Macroeconomics Annual 2024, volume 39, National Bureau of Economic Research, Inc.
    19. Karl Whelan, 2021. "Central banks and inflation: where do we stand and how did we get here?," European Journal of Economics and Economic Policies: Intervention, Edward Elgar Publishing, vol. 18(3), pages 310–330-3, December.
    20. Bartosz Maćkowiak & Filip Matějka & Mirko Wiederholt, 2023. "Rational Inattention: A Review," Journal of Economic Literature, American Economic Association, vol. 61(1), pages 226-273, March.

    More about this item

    Keywords

    Inflation; Phillips curve; Supply shocks; Inflation expectations;
    All these keywords.

    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E37 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Forecasting and Simulation: Models and Applications
    • E7 - Macroeconomics and Monetary Economics - - Macro-Based Behavioral Economics

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cpr:ceprdp:18963. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: the person in charge (email available below). General contact details of provider: https://www.cepr.org .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.