Bounding the Effect of Persuasion with Monotonicity Assumptions: Reassessing the Impact of TV Debates

Sung Jae Jun and Sokbae (Simon) Lee

Papers from arXiv.org

Abstract: Televised debates between presidential candidates are often regarded as the exemplar of persuasive communication. Yet, recent evidence from Le Pennec and Pons (2023) indicates that they may not sway voters as strongly as popular belief suggests. We revisit their findings through the lens of the persuasion rate and introduce a robust framework that does not require exogenous treatment, parallel trends, or credible instruments. Instead, we leverage plausible monotonicity assumptions to partially identify the persuasion rate and related parameters. Our results reaffirm that the sharp upper bounds on the persuasive effects of TV debates remain modest.

Date: 2025-03
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