MENTAL MODEL · M8685

Outgroup Homogeneity

BusinessHigh supportMarketing

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

We tend to perceive members of our own group (ingroup) as diverse and individualistic, while perceiving members of other groups (outgroup) as "all the same" (e.g., "people in sales are all slick," "programmers are all dull").

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

De-labeling. When a team starts to generalize another department with "those people," intervene immediately. Introduce specific personal stories to break the monolithic illusion of homogeneity.

anchor

Anchor fast decisions

The outgroup homogeneity bias refers to the tendency to think "they (the outgroup) are all the same," while ingroup members are seen as having distinct personalities. The mechanism is that limited contact leads to a lack of information about individual differences.

MINIMUM ACTION

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Practice this model in one real situation:

After becoming aware of this bias, actively collect information about individual differences among outgroup members, avoiding judging people by group.

Check to track your progress (stored locally)

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Source support: Explicit

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zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E5%A4%96%E5%9C%98%E9%AB%94%E5%90%8C%E8%B3%AA%E6%80%A7ZH · Explicit
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