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MENTAL MODEL · M0751

Cohesion

Cohesion
CreateHigh supportDesign Thinking
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The degree to which elements within a module (or department) are closely related. High cohesion means that the things inside a module exist for the same purpose.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Organization and structuring. Paired with 'low coupling'. Check your team: if one person handles both sales and computer repairs, that is 'low cohesion'. By making responsibilities singular and pure, efficiency naturally improves.

anchor

Anchor fast decisions

If elements within a module serve the same responsibility, changes, understanding, and reuse are consistent and do not interfere with each other; low cohesion means mixed goals, and a change in one place affects others. The mechanism is 'goal consistency → low coupling side effect'.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/CohesionZH · Explicit
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