Treatment Effect Accounting for Network Changes
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 ins...
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| Published in | The review of economics and statistics Vol. 103; no. 3; pp. 597 - 604 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Massachusetts Institute of Technology Press (MIT Press)
2021
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| Subjects | |
| Online Access | Get full text |
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| Abstract | 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. |
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| AbstractList | 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. |
| Author | Comola, Margherita Prina, Silvia |
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| BackLink | https://shs.hal.science/halshs-02973059$$DView record in HAL |
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| DOI | 10.1162/rest_a_00908 |
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| Issue | 3 |
| Keywords | Peer effects Treatment effect Time-varying networks |
| Language | English |
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| Snippet | 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.... |
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| Title | Treatment Effect Accounting for Network Changes |
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