{"id":60981,"date":"2025-07-10T10:48:30","date_gmt":"2025-07-10T10:48:30","guid":{"rendered":"https:\/\/www.iseg.ulisboa.pt\/?post_type=event&p=60981"},"modified":"2026-01-23T10:55:09","modified_gmt":"2026-01-23T10:55:09","slug":"iseg-winter-school-2026","status":"publish","type":"event","link":"https:\/\/www.iseg.ulisboa.pt\/en\/event\/iseg-winter-school-2026\/","title":{"rendered":"ISEG Winter School 2026"},"content":{"rendered":"

The ISEG Winter School 202<\/strong>6<\/strong> <\/em>takes place from January 19-21, 2026<\/strong> and is part of a course aimed at presenting and discussing the most recent theoretical and empirical advances in the scientific areas of applied economics and methods, and is organized by ISEG in partnership with the LESE<\/a>. <\/p>\n\n\n\n

This training is aimed at Masters, PhD students, researchers and university professors<\/em>and others Executive Management<\/em> in the public administration, state business and private sectors.<\/p>\n\n\n\n

Course: New Developments in Difference-in-Differences Estimators<\/h2>
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Speaker: Xavier D'Haultfoeuille<\/a><\/strong><\/strong>, ENSAE Paris, Polytechnic Institute of Paris<\/strong><\/p>\n\n\n\n

Date: January 19-21, 2026 (09h00-13h30)<\/p>\n\n\n\n

Room : Amphitheater 3 (Francesinhas Building 2)<\/p>\n\n\n\n

Course Description:<\/p>\n\n\n\n

Difference-in-differences are one of the most popular methods to estimate causal effects. But what do we mean exactly by \"Difference-in-differences\", once we depart from the original setup where some groups become to receive a binary treatment, whereas some others do not? And are there alternatives to the usual parallel-trends assumption? This course will review recent work on difference-in-differences that address these issues. It will follow the structure of our textbook in progress with Cl\u00e9ment de Chaisemartin. The duration given for each section should be seen as indicative.<\/p>\n\n\n\n

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  1. Introduction and set-up (1 hour)<\/li>\n\n\n\n
  2. Classical designs (2 hours)<\/li>\n\n\n\n
  3. Alternatives to parallel trends (2 hours)<\/li>\n\n\n\n
  4. TWFE estimators outside of the classical design (1 hour)<\/li>\n\n\n\n
  5. Designs with variation in treatment timing (2 hours)<\/li>\n\n\n\n
  6. Designs with variation in treatment dose (2 hours)<\/li>\n\n\n\n
  7. General designs (2 hours)<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n

    <\/p>\n\n\n\n

    Registration<\/strong><\/p>\n\n\n\n

    Registrations can be made using the registration form available here. this LINK<\/a>.<\/strong><\/p>\n\n\n\n

    Once the registration form has been filled in, the participant will receive confirmation by e-mail and the payment details.<\/p>\n\n\n\n

    Registration fees<\/strong><\/p>\n\n\n\n