---
title: "Out-group Homogeneity Bias — AP Psych Definition & Exam Guide"
description: "Out-group homogeneity bias is seeing out-group members as \"all the same.\" Learn how it fuels stereotypes and prejudice in AP Psych Topic 9.5."
canonical: "https://fiveable.me/ap-psych-revised/key-terms/out-group-homogeneity-bias"
type: "key-term"
subject: "AP Psychology"
---

# Out-group Homogeneity Bias — AP Psych Definition & Exam Guide

## Definition

Out-group homogeneity bias refers to the tendency for individuals to perceive members of an out-group as more similar to each other than they actually are. It is the belief that people in a different group share common characteristics or traits.

## Review

### Related Terms

- [In-group Bias](/ap-psych-revised/key-terms/in-group-bias): The tendency to favor one's own group over other groups.
- [Stereotypes](/ap-psych-revised/key-terms/stereotypes): Fixed, oversimplified beliefs about a particular group of people.
- [Prejudice](/ap-psych-revised/key-terms/prejudice): Negative attitudes or judgments towards individuals based on their membership in a certain group.