---
title: "Yale Attitude Change Approach: Persuasion Model"
description: "The Yale Attitude Change Approach explains how persuasion relies on the source, message, and audience, essential for UPSC GS4 ethics and communication studies."
url: "https://modeldiplomat.com/learn/glossary/yale-attitude-change-approach"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Yale Attitude Change Approach is a mid-20th-century communication model holding that persuasion depends on the source, the message, and the audience.
- What are the three main components of the Yale Attitude Change Approach?
- What is the sleeper effect in the Yale model?
- How does the Yale approach differ from the Elaboration Likelihood Model?
- Why is the Yale Attitude Change Approach relevant to UPSC GS Paper IV?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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In 1951 Carl Hovland and Walter Weiss showed that audiences attributing a message to a high-credibility source, such as a respected physicist, changed their attitudes far more than those told the same message came from a low-credibility outlet.

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