Research

Paper

TESTING February 19, 2026

Lies, Labels, and Mechanisms

Authors

Alex L. Brown, Ethan Park, Rodrigo A. Velez

Abstract

We test whether lying aversion can steer equilibrium selection in mechanism design. In a principal-worker environment, the direct mechanism admits two dominant-strategy equilibria: the designer's target and a worker-optimal outcome. We show this limitation persists for all robust mechanisms, then ask whether framing misreports as explicit lies helps. We develop a 2X2 experiment that varies direct vs. extended mechanisms with implicit vs. explicit messages. We find that framing misreporting of type as an explicit lie shifts play away from the worker-optimal outcome toward truthful reporting, raising designer payoffs with minimal efficiency loss. These findings indicate that lying aversion is an effective lever for aligning behavior with social objectives.

Metadata

arXiv ID: 2602.16973
Provider: ARXIV
Primary Category: econ.GN
Published: 2026-02-19
Fetched: 2026-02-21 18:51

Related papers

Raw Data (Debug)
{
  "raw_xml": "<entry>\n    <id>http://arxiv.org/abs/2602.16973v1</id>\n    <title>Lies, Labels, and Mechanisms</title>\n    <updated>2026-02-19T00:26:05Z</updated>\n    <link href='https://arxiv.org/abs/2602.16973v1' rel='alternate' type='text/html'/>\n    <link href='https://arxiv.org/pdf/2602.16973v1' rel='related' title='pdf' type='application/pdf'/>\n    <summary>We test whether lying aversion can steer equilibrium selection in mechanism design. In a principal-worker environment, the direct mechanism admits two dominant-strategy equilibria: the designer's target and a worker-optimal outcome. We show this limitation persists for all robust mechanisms, then ask whether framing misreports as explicit lies helps. We develop a 2X2 experiment that varies direct vs. extended mechanisms with implicit vs. explicit messages. We find that framing misreporting of type as an explicit lie shifts play away from the worker-optimal outcome toward truthful reporting, raising designer payoffs with minimal efficiency loss. These findings indicate that lying aversion is an effective lever for aligning behavior with social objectives.</summary>\n    <category scheme='http://arxiv.org/schemas/atom' term='econ.GN'/>\n    <published>2026-02-19T00:26:05Z</published>\n    <arxiv:primary_category term='econ.GN'/>\n    <author>\n      <name>Alex L. Brown</name>\n    </author>\n    <author>\n      <name>Ethan Park</name>\n    </author>\n    <author>\n      <name>Rodrigo A. Velez</name>\n    </author>\n  </entry>"
}