Treatment Effect Accounting for Network Changes
Margherita Comola
(1, 2, 3)
,
Silvia Prina
(4)
Margherita Comola
- Fonction : Auteur
- PersonId : 1287423
- IdHAL : margherita-comola
- ORCID : 0000-0001-6836-1759
- IdRef : 224716387
Résumé
Networks may rewire in response to interventions. We propose a measure of the treatment effect when an intervention affects the structure of a social network. We develop a treatment-response model that incorporates dynamic peer effects and provide its identification conditions and the associated instrumental-variable strategy. We illustrate our estimation procedure using a panel dataset containing information on a financial network before and after a field experiment that randomized access to savings accounts. Results show that neglecting the network change results in underestimation of the impact of the intervention and the role played by informal networks through which the intervention diffuses.
Domaines
Economies et financesFormat du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Treatment Effect Accounting for Network Changes
|
Résumé |
en
Networks may rewire in response to interventions. We propose a measure of the treatment effect when an intervention affects the structure of a social network. We develop a treatment-response model that incorporates dynamic peer effects and provide its identification conditions and the associated instrumental-variable strategy. We illustrate our estimation procedure using a panel dataset containing information on a financial network before and after a field experiment that randomized access to savings accounts. Results show that neglecting the network change results in underestimation of the impact of the intervention and the role played by informal networks through which the intervention diffuses.
|
Auteur(s) |
Margherita Comola
1, 2, 3
, Silvia Prina
4
1
PSE -
Paris School of Economics
( 301309 )
- 48 boulevard Jourdan 75014 Paris
- France
2
PJSE -
Paris Jourdan Sciences Economiques
( 578027 )
- 48 boulevard Jourdan 75014 Paris
- France
3
UP11 -
Université Paris-Sud - Paris 11
( 92966 )
- Bâtiment 300 - 91405 Orsay cedex
- France
4
Northeastern University [Boston]
( 29479 )
- 360 Huntington Ave., Boston, Massachusetts 02115
- États-Unis
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2021
|
Volume |
103
|
Public visé |
Scientifique
|
Numéro |
3
|
Page/Identifiant |
597-604
|
Domaine(s) |
|
Mots-clés (JEL) |
|
Projet(s) ANR |
|
Mots-clés |
en
Peer effects, Time-varying networks, Treatment effect
|
DOI | 10.1162/rest_a_00908 |
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