Paper: Competition and Reputation in an Online Marketplace: Evidence from Airbnb
Management Science, INFORMS, Michelangelo Rossi, April 2023
This paper studies how competition affects the role of reputation in encouraging sellers to exert effort. More competition disciplines sellers, but at the same time, it erodes reputational premia. This paper identifies whether one effect dominates the other using data from Airbnb. I exploit the introduction of a short-term rental regulation effective in San Francisco in 2017 that halved the number of short-term listings on the platform. I focus on hosts who are present on the platform before and after the regulation, and I identify a negative causal effect of the number of competitors on ratings about hosts’ effort. I extend this result with two other measures of effort: hosts’ response rate and response time. I confirm that hosts exert less effort when the number of competitors increases. The rate of responses within 24 hours decreases, and response time increases.
https://awards.concurrences.com/en/awards/2024/academic-articles/competition-and-reputation-in-an-online-marketplace-evidence-from-airbnb
RAYON X : Rencontre avec Patricia Crifo
Patricia Crifo, Professeur à l’X au Centre de recherche en économie et statistique (CREST), s’est prêtée au jeu de “Rayon X, lumière sur les scientifiques”.
Sans préparation, elle a répondu aux questions sérieuses ou non, pour mieux faire connaître son métier de chercheuse en économie.
Site personnel de Patricia Crifo: https://sites.google.com/site/patriciacrifo/
“Rayon X – Lumière sur les scientifiques”
Les vidéos de la série “Rayon X” mettent en lumière des chercheuses et des chercheurs. Car au fond, qui sont les scientifiques ?
En répondant à des questions sérieuses, et à d’autres qui le sont beaucoup moins, ceux-ci démystifient leur travail, la recherche, et évoquent ce qui les anime et leur quotidien (reconnaissance, travail d’équipe, diversité, transmission, confiance, etc.)
Retrouvez l’ensemble des interviews “Rayon X” :
https://www.youtube.com/watch?v=iBfSQmKuYiY&list=RDCMUCBV0UXKsSD3S2XQMD20QrtQ&start_radio=1&rv=iBfSQmKuYiY&t=10
Teaser :
https://www.youtube.com/watch?v=9r7HdqTV0T0
Monitoring the Economy in Real Time: Trends and Gaps in Real Activity and Prices
CREST Working Papers Series No. 2023-06
by Thomas Hasenzagl, Filippo Pellegrino, Lucrezia Reichlin and Giovanni Ricco
Benoît Schmutz, nouveau titulaire de la chaire professorale Jean Marjoulet de l’École Polytechnique
Chercheur au CREST et professeur au département d’économie de l’École Polytechnique et spécialiste des questions d’économie urbaine, Benoît Schmutz est le nouveau titulaire de la chaire professorale Jean Marjoulet. Il succède à Camille Duprat, enseignante-chercheuse au Laboratoire d’hydrodynamique (CNRS, École polytechnique – IP Paris).
Spillovers in Childbearing Decisions and Fertility Transitions: Evidence from China
CREST Working Papers Series No. 2023-05
by Pauline Rossi and Yun Xiao
2023 ENSAE/ENSAI Doctoral Scholarships – Call for applications
ENSAE and ENSAI are offering PhD scholarships for its 3-years PhD program. Deadline May 14, 2023
ENSAI Economics Days 2023_ Workshop on Macroeconomics – Rennes, 11-12 May 2023
The CREST, ENSAI, UCL and NU are pleased to organize a workshop in Macroeconomics, the 30th ENSAI Economics Days, in Rennes, on May 11-12, 2023
Discover the 2023 CREST Econ Job Placement
The Crest is proud and happy for the wonderful placement of its Econ Job Market candidates
Five CREST researchers ranked by Research.com
| Research.com is a platform whose purpose is to make easier access to science. The platform offers an access to a list of leading scientists based on a wide range of metrics such as the number of citations, number of publications and a list of their awards and achievements which are compiled from various bibliometrics data sources |
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1. Mathematics
10. Christian P. Robert
Affiliated researcher, Professor at Dauphine, teaching at ENSAE
Christian P. Robert is a highly regarded researcher in the field of statistics and probabilistic modeling, and his work has contributed significantly to the development of Bayesian statistics, Monte Carlo methods, and machine learning.
23. Alexandre Tsybakov
Permanent researcher, Professor at ENSAE
Alexandre Tsybakov is a highly regarded researcher in the field of statistics, and his work has contributed significantly to the development of nonparametric and high-dimensional statistics, and machine learning.
30. Christian Gourieroux
Emeritus Professor at ENSAE, Professor at University of Toronto and Toulouse School of Economics
Gourieroux’s research has been instrumental in advancing the field of econometrics and has had a significant impact on empirical finance and related fields.
2. Economics and Finance
9. Christian Gourieroux
Emeritus Professor at ENSAE, Professor at University of Toronto and Toulouse School of Economics
Christian Gourieroux is a prominent economist and econometrician, known for his contributions to time series analysis, econometrics, financial econometrics, and empirical finance. He has published extensively in top academic journals and has received numerous honoris causa and awards for his work.
14. Francis Kramarz
Permanent researcher, Professor at ENSAE
Kramarz’s research has had a significant impact on the field of labor economics, providing new insights into the workings of labor markets and informing public policy debates on important social and economic issues.
33. Alain Monfort
Emeritus Professor at ENSAE
Monfort’s research has made significant contributions on the field of econometrics and financial economics, advancing our understanding of financial markets, time series econometrics, and he linkages between macroeconomic and financial variables.
All members of CREST have joined to congratulate their fellow colleagues for their ranks!
Economist Giovanni Ricco’s Work Featured in the 2023 Economic Report of the President
Giovanni Ricco joined CREST in January 2023. He was previously a professor in economics at the University of Warwick and a researcher affiliated with several institutions, including the OFCE – Sciences Po, the Centre for Economic Policy Research (CEPR), Economic Research Southern Africa (ERSA), and the South African Reserve Bank (SARB). He has a PhD in Economics from the London Business School and a PhD in Physics from the ‘Galileo Galilei’ School of Graduate Studies of Università di Pisa. He has also earned a Master of Science in Economics with distinction from LUISS ‘Guido Carli’ University and a Master in Quantitative Finance from Università degli Studi di Bologna ‘Alma Mater’. Ricco has had several other professional engagements, including consulting work for Danmarks Nationalbank, being a visiting professor at Université Paris-Dauphine, and serving as a senior economist at the European Central Bank. He has also been a research fellow and visiting research fellow at several institutions. Ricco has published articles in various journals, including the European Economic Review, The Review of Economics and Statistics, and the American Economic Journal: Macroeconomics.
Economic Report of the President
In the US, the Economic Report of the President is an annual report written by the Chairman of the Council of Economic Advisers, which provides an overview of the nation’s economic progress, analyzes current policy issues and makes policy recommendations to the President and Congress. The report is typically released in February and is submitted to Congress in support of the President’s annual budget request.
Ricco’s work recently gained widespread recognition after being published in the ‘Economic Report of the President’ by the White House that cited the work.
Silvia Miranda-Agrippino and Giovanni Ricco. 2021. “The Transmission of Monetary Policy Shocks.” American Economic Journal: Macroeconomics, 13 (3): 74-107
This work has helped in clarifying how monetary policy affects the economy. In particular, the paper showed that the puzzling effects of monetary policy reported in previous studies were due to the so-called “signalling effects” of monetary policy, i.e. the fact that the actions of policymakers can reveal information about their assessments of the economy. A new high-frequency identification for monetary policy shocks was proposed, accounting for informational effects. It was found that a monetary tightening is unequivocally contractionary, with deterioration of domestic demand, labor and credit market conditions as well as of asset prices and agents’ expectations.