How Wasteful is Signaling?

Fuente: arXiv
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Autores principales: Frankel, Alex, Kartik, Navin
Formato: Preprint
Publicado: 2026
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author Frankel, Alex
Kartik, Navin
author_facet Frankel, Alex
Kartik, Navin
contents Signaling is wasteful. But how wasteful? We study the fraction of surplus dissipated in a separating equilibrium. For isoelastic environments, this waste ratio has a simple formula: $β/(β+σ)$, where $β$ is the benefit elasticity (reward to higher perception) and $σ$ is the elasticity of higher types' relative cost advantage. The ratio is constant across types and is independent of other parameters, including convexity of cost in the signal. We show that the directional effects of $β$ and $σ$ on waste extend to non-isoelastic environments.
format Preprint
id arxiv_https___arxiv_org_abs_2601_14454
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle How Wasteful is Signaling?
Frankel, Alex
Kartik, Navin
General Economics
Economics
Computer Science and Game Theory
Signaling is wasteful. But how wasteful? We study the fraction of surplus dissipated in a separating equilibrium. For isoelastic environments, this waste ratio has a simple formula: $β/(β+σ)$, where $β$ is the benefit elasticity (reward to higher perception) and $σ$ is the elasticity of higher types' relative cost advantage. The ratio is constant across types and is independent of other parameters, including convexity of cost in the signal. We show that the directional effects of $β$ and $σ$ on waste extend to non-isoelastic environments.
title How Wasteful is Signaling?
topic General Economics
Economics
Computer Science and Game Theory
url https://arxiv.org/abs/2601.14454