---
title: "Costly signaling"
type: "entity"
entity_kind: "concept"
status: "hub"
canonical_name: "costly signaling"
aliases: ["costly signaling theory","Spence signaling model","job market signaling"]
first_seen: "2026-07-18T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Michael Spence","Nick Szabo","unforgeable cost of production","generative AI demonetization","meritocratic hiring"]
---


The economic principle, formalized by [[entity-michael-spence|Michael Spence]] in 1973, that a signal only conveys real information to the extent it is costly to produce — a job applicant's effort, a metal's scarcity, a grade's difficulty to earn. Cheapen the cost of producing the signal without cheapening the underlying quality it was supposed to indicate, and the signal stops working: employers, buyers, or institutions can no longer sort on it. This is the structural twin, in labor and credentialing markets, of [[claim-szabo-bit-gold-grounds-value-in-unforgeable-cost-of-production|Szabo's unforgeable-cost-of-production account of monetary value]] — the same law, read once through money and once through hiring.

## References
- [[claim-llm-collapse-of-costly-writing-signal-cuts-meritocratic-hiring]] · [[claim-generative-ai-availability-compresses-university-grade-distributions]]