2021 Conference on Econometrics

June 3-4, 2021

Location: Virtual

Organizer: Edward Vytlacil


Thursday, June 3
Session 1
9:00am to 9:45am Chair: Harrison Zhou (Yale University)

*Federico Bugni (Duke University), Mengsi Gao (Duke University), “Inference under Covariate-Adaptive Randomization with Imperfect Compliance”
Discussant: Kasper Wuthrich (University of California, San Diego)
9:45am to 10:30am Christopher Harshaw (Yale University), *Fredrik Savje (Yale University), Dan Spielman (Yale University), Peng Zhang (Yale University), “Balancing Covariates in Randomized Experiments with the Gram-Schmidt Walk Design”
Discussant: Maximilian Kasy (University of Oxford)
10:30am to 11:00am Coffee Break
Session 2
11:00am to 11:45am Chair: Don Andrews (Yale University)

Edoardo M. Airoldi (Temple University), “Model Assisted Design of Bipartite Experiments”
Discussant: Aureo de Paula (University College London)
11:45am to 12:30pm Eric D. Kolaczyk (Boston University), “Causal Inference under Network Interference with Noise”
Discussant: Kyungchul Song (University of British Columbia)
12:30pm to 1:15pm Lunch
Session 3
1:15pm to 2:00pm Chair: Peter Aronow (Yale University)

Azeem Shaikh (University of Chicago), *Panos Toulis (University of Chicago Booth), “Randomization Tests in Observational Studies with Staggered Adoption of Treatment”
Discussant: Marinho Bertanha (Notre Dame University)
2:00pm to 2:45pm *Clément de Chaisemartin (University of California, Santa Barbara), Xavier D’Haultfoeuille (Center for Research in Economics and Statistics), “Difference-in-Differences Estimators of Intertemporal Treatment Effects”
Discussant: Pedro H. C. Sant'Anna (Vanderbilt University)
2:45pm to 3:15pm Coffee Break
Session 4
3:15pm to 4:00pm Chair: Alex Torgovitsky (University of Chicago)

*Jonathan Roth (Microsoft Corporation), Pedro H. C. Sant'Anna (Vanderbilt University), “When Is Parallel Trends Sensitive to Functional Form?”
Discussant: Karun Adusumilli (University of Pennsylvania)
4:00pm to 4:45pm Dean Eckles (Massachusetts Institute of Technology), Nikolaos Ignatiadis (Stanford University), *Stefan Wager (Stanford University), Han Wu (HEC Paris), “Noise-Induced Randomization in Regression Discontinuity Designs”
Discussant: Timothy Armstrong (Yale University)
4:45pm to 5:00pm Coffee Break
Session 5
5:00pm to 5:45pm Chair: Xiaohong Chen (Yale University)

Kei Hirano (Pennsylvania State University), “Asymptotic Representations for Sequential Experiments”
Discussant: Isaiah Andrews (Harvard University)
Friday, June 4
Session 1
9:00am to 9:45am Chair: Yuichi Kitamura (Yale University)

*Toru Kitagawa (University College London), Shosei Sakaguchi (University College London), Aleksey Tetenov (University of Geneva), “Constrained Classification and Policy Learning”
Discussant: Jöerg Stoye (Cornell University)
9:45am to 10:30am Simon Lee (Columbia University), *Martin Weidner (University of Oxford), “Bounding Treatment Effects by Pooling Limited Information across Observations”
Discussant: Adam Rosen (Duke University)
10:30am to 11:00am Coffee Break
Session 2
11:00am to 11:45am Chair: Azeem Shaikh (University of Chicago)

Sukjin (Vincent) Han (University of Bristol), “Optimal Dynamic Treatment Regimes and Partial Welfare Ordering”
Discussant: Takuya Ura (University of California, Davis)
11:45am to 12:30pm *Ivan Canay (Northwestern University), Magne Mogstad (University of Chicago), Jack Mountjoy (University of Chicago Booth), “On the Use of Outcome Tests for Detecting Bias in Decision Making”
Discussant: Xavier D'Haultfoeuille (Center for Research in Economics and Statistics)
12:30pm to 1:15pm Lunch
Session 3
1:15pm to 2:00pm Chair: Amanda Kowalski (University of Michigan - Ann Arbor)

*Yuehao Bai (University of Michigan - Ann Arbor), Azeem Shaikh (University of Chicago), Edward Vytlacil (Yale University), “Ranking Treatments Using Instrumental Variables and Alternative Monotonicity Restrictions”
Discussant: Shakeeb Khan (Boston College)
2:00pm to 2:45pm *Simon Lee (Columbia University), Bernard Salanié (Columbia University), “Filtered and Unfiltered Treatment Effects with Targeting Instruments”
Discussant: Ismael Mourifie (University of Toronto)
2:45pm to 3:15pm Coffee Break
Session 4
3:15pm to 4:00pm Chair: Xiaohong Chen (Yale University)

Vira Semenova (Harvard University), “Better Lee Bounds”
Discussant: Xiaoxia Shi (University of Wisconsin-Madison)
4:00pm to 4:45pm *Max Farrell (University of Chicago Booth), Tengyuan Liang (University of Chicago Booth), Sanjog Misra (University of Chicago Booth), “Deep Learning for Individual Heterogeneity”
Discussant: Ying Zhu (University of California, San Diego)


Simon Lee (Columbia University)
Karun Adusumilli (University of Pennsylvania)
JiHyung Lee (University of Illinois at Urbana-Champaign)
Edoardo Airoldi (Temple University)
Ming Li (Yale University)
Joseph Altonji (Yale University)
Tengyuan Liang (University of Chicago)
Donald Andrews (Yale University)
Winston Lin (Yale University)
Donald Andrews (Yale University)
Oliver Linton (University of Cambridge)
Isaiah Andrews (Harvard University)
Elena Manresa (New York University)
Timothy Armstrong (Yale University)
Matt Masten (Duke University)
Peter Aronow (Yale University)
Rosa Matzkin (UCLA)
Eric Auerbach (Northwestern University)
Arnaud Maurel (Duke University)
Andrii Babii (University of North Carolina at Chapel Hill)
Konrad Menzel (New York University)
Yuehao Bai (University of Michigan - Ann Arbor)
Sanjog Misra (University of Chicago Booth)
Zack Barnett-Howell (Yale University)
Francesca Molinari (Cornell College)
Marinho Bertanha (University of Notre Dame)
Roger Moon (University of Southern California)
Federico Bugni (Duke University)
Ismael Mourifie (University of Toronto)
Ivan Canay (Northwestern University)
Ulrich Mueller (Princeton University)
Haoge Chang (Yale University)
Yusuke Narita (Yale University)
Xiaohong Chen (Yale University)
Guillermo Noguera (Yale University)
Victor Chernozhukov (Massachusetts Institute of Technology)
Vitor Possebom (Yale University)
Andrew Chesher (University College London)
Demian Pouzo (University of California, Berkeley)
Timothy Christensen (New York University)
Seth Richards-Shubik (Lehigh University)
Fernando Cordeiro (Yale University)
Joseph Romano (Stanford University)
Xavier D'Haultfoeuille (Center for Research in Economics and Statistics)
Adam Rosen (Duke University)
Clement de Chaisemartin (University of California, Santa Barbara)
Jonathan Roth (Microsoft Corporation)
Aureo de Paula (University College London)
Sutanuka Roy (Australian National University)
Peng Ding (University of California, Berkeley)
Shosei Sakaguchi (University College London)
Deniz Dutz (University of Chicago)
Pedro Sant'Anna (Vanderbilt University)
Kirill Evdokimov (Universitat Pompeu Fabra)
Andres Santos (University of California, Los Angeles)
Yanqin Fan (University of Washington)
Fredrik Savje (Yale University)
Max Farrell (University of Chicago Booth)
Vira Semenova (University of California, Berkeley)
Avi Feller (University of California, Berkeley)
Azeem Shaikh (University of Chicago)
Ivan Fernandez-Val (Boston University)
Shuyang Sheng (University of California, Los Angeles)
Amit Gandhi (The Wharton School of the University of Pennsylvania)
Xiangyu Shi (Yale University)
Mengsi Gao (University of California, Berkeley)
Xiaoxia Shi (University of Wisconsin-Madison)
Eric Gautier (Toulouse School of Economics)
Mikkel Soelvsten (University of Wisconsin-Madison)
John Geanakoplos (Yale University)
Kyungchul Song (University of British Columbia)
David Gelvez Alvarez (Yale University)
Daniel Spielman (Yale University)
Florian Gunsilius (University of Michigan - Ann Arbor)
Joerg Stoye (Cornell University)
Phil Haile (Yale University)
Max Tabord-Meehan (University of Chicago)
Sukjin Han (University of Bristol)
Elie Tamer (Harvard University)
Christopher Harshaw (Yale University)
Xun Tang (Rice University)
YingHua He (Rice University)
Aleksey Tetenov (University of Geneva)
Marc Henry (Pennsylvania State University)
Alexander Torgovitsky (University of Chicago)
Keisuke Hirano (Pennsylvania State University)
Panos Toulis (University of Chicago Booth)
Michael Jansson (University of California, Berkeley)
Takuya Ura (University of California, Davis)
Sid Kankanala (Yale University)
Winnie van Dijk (Harvard University)
Maximilian Kasy (University of Oxford)
Edward Vytlacil (Yale University)
Shakeeb Khan (Boston College)
Stefan Wager (Stanford Graduate School of Business)
Toru Kitagawa (University College London)
Yazhen Wang (University of Wisconsin-Madison)
Yuichi Kitamura (Yale University)
Martin Weidner (University of Oxford)
Vanya Klenovskiy (Yale University)
Yoon-Jae Whang (Seoul National University)
Brendan Kline (University of Texas at Austin)
Daniel Wilhelm (University College London)
Eric Kolaczyk (Boston University)
Jeffrey Wooldridge (Michigan State University)
Michal Kolesar (Princeton University)
Kaspar Wuthrich (University of California, San Diego)
Amanda Kowalski (University of Michigan - Ann Arbor)
Kohei Yata (Yale University)
Guido Kuersteiner (University of Maryland)
Peng Zhang (Yale University)
Koohyun Kwon (Yale University)
Harrison Zhou (Yale University)
Soonwoo Kwon (Yale University)
Ying Zhu (University of California, San Diego)
Soonwoo Kwon (Yale University)

Virtual Chair Frequently Asked Questions

Once you have signed-in to Virtual Chair, use your arrow keys to navigate around the virtual conference space. The following video has more details about using Virtual Chair.

Additional information can be found on the Virtual Chair Help Guide page.

The 2021 Cowles Summer Conferences will be held virtually using the Virtual Chair online platform. A separate invitation will be sent to participants with instructions on how to access the conference session you registered for. This brief overview video explains how to navigate the Virtual Chair space.

A list of frequently asked questions for Virtual Chair guests can be found on this FAQ page. To familiarize yourself with the different features available while attending a Virtual Chair session can be found on the Glossary Page.

Each conference space within Virtual Chair has a presentation area called a Plenary Room which is found at the top of the screen.  Navigate your avatar to the plenary room door to enter the room. To join the Zoom presentation, have your avatar take a seat on a vacant stool and press “X” on your keyboard. At this point you will be presented with a Zoom link on the screen. Clicking the link will automatically launch Zoom on your computer to watch the presentation. Steps below:

  1. Enter the Plenary Room at the top of the screen through either of the doorways.
    Virtual Chair Lobby
  2. After entering the Plenary Room, have your avatar sit on a vacant stool.

    Virtual Chair Plenary Room

  3. At this point, press the “X“ key on your keyboard to join the Zoom session; click the link to launch Zoom.
    Join Zoom

    Enter Zoom link

  4. Once the Zoom presentation has finished, click the Leave Meeting button to bring you back to the Virtual Chair session in your browser. Exit the Zoom browser tab if necessary and on the Virtual Chair browser page, click the green Re-enter button to bring you back to the plenary room.

The following video shows what the attendee will experience joining Zoom from Virtual Chair, and re-entering the Virtual Chair venue once exiting the Zoom session..

Visit the Virtual Chair help page for additional information on how to connect to Zoom sessions.

Your affiliation will be displayed if another participant clicks on your name. Additionally, you can display your affiliation on your avatar by using the Status field found in your avatar settings (click on your name at the bottom of the screen to display the settings).  To save the status text, click anywhere outside of the settings window. Click image below to view a help video or visit this help page.

You can see all participants who have signed-in to Virtual Chair by clicking the people icon in the toolbar found on the left of the screen.

If a paper discussion is to take place, the Virtual Chair venue has provided two areas in the main lobby where participants can congregate. The rug areas will be clearly marked with signs. To join the discussion, navigate your avatar onto the  rug where you will hear and see only those other participants in the discussion.

If your avatar is unable to access the rug becuase it is being blocked by another avatar, hold down the G key to move through the other avatars.

 Virtual Chair Lobby for Cowles Conference

Before joining a Virtual Chair conference session please take note of these recommendations:

  • Use a desktop or laptop computer, not a mobile device such as a phone or tablet
  • Use either Chrome or Firefox browsers to connect to a session
  • Disconnect from VPN before joining a session
  • Download and install Zoom video conference software to view speaker sessions

Joining a Virtual Chair conference session:

  1. An email will be sent to you containing information on how to access the conference session(s) you registered for. Follow the link in the email to access the Virtual Chair session webpage. Click the Join button on the Virtual Chair session webpage. Enter the provided password when prompted.
  2. When prompted, enter the password provided in the email.
    Password prompt
  3. You will then be prompted to enter your name and configure your Virtual Chair avatar. It is here that you can also verify that your computer camera and microphone are working. Click the Join the Gathering button to enter the Virtual Chair venue space.
    Virtual Chair avatar settings window
  4. You will enter the venue where you can use your keyboard arrow keys to navigate the space to converse with your colleagues.

Additional information can be found on the Virtual Chair Help Guide page, or in this Virtual Chair PDF Help Guide.

As with in-person conferences, you can approach anyone in the Virtual Chair venue to interact with colleagues. When you approach another participant, that person’s camera will appear at the top of your screen allowing you to converse. If you would like a more private conversation, you can sit at one of the tables in the lounge area. The number of chairs dictates the number of people who can interact with each other. If there are no empty chairs, no one else can join the conversation. Thus, if you want a one-on-one conversation, sit at a table with only two chairs.

Interacting with others

Seating Options

Private Table for two
Private table for two Table with four chairs Table with eight seats

You can find a schedule of all the presentation on the left sidebar. Click the calendar icon to show upcoming events listed at the top of the sidebar.

If you need assistance navigating Virtual Chair, you can contact a support person in one of the following ways:

Help Desk

In (virtual) Person

  • Walk to a virtual Helpdesk to discuss your question directly. Helpdesks will be located in the lobby

  • Chat one-on-one with a Helpdesk staff member by scrolling through the participant list and clicking on their name, then “message”. You can also search for the Helpdesk staff member using the search bar, found above the list of participants.


Via Email

  • Email the Virtual Chair staff to alert them if you have trouble navigating the event space     on gather.town; they are available at the unique help email found on your event’s  landing page.
  • Or email help@virtualchair.net and put the name of the event you’re attending in the subject line.

In order for Virtual Chair’s Helpdesk team to best assist you, it is recommended that you confirm which browser you are using, and provide either a screenshot or a description of the specific webpage where you encountered an issue. Specific information on troubleshooting audiovisual connection issues is available by clicking here.

Via the Web