Cognitive Scaffold

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MENTAL MODEL · M3395

Complex Contagion

Complex Contagion
CollaborateHigh supportCommunication Studies
Included
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Version 1.0.0 · Updated 2026-07-31

CORE DEFINITION

Unlike simple contagion (e.g., a virus, which infects upon a single contact), complex contagion (e.g., behavior change, adoption of new technology) requires multiple exposures and social reinforcement from multiple independent sources to be adopted.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Deep promotion strategy. If you are promoting an expensive or counterintuitive product (complex contagion), relying on weak ties (casting a wide net) is ineffective; you must leverage strong ties (intensive bombardment within small circles) and wide bridges strategies.

anchor

Anchor fast decisions

Complex contagion requires multiple, independent sources of social reinforcement to be adopted (threshold model), unlike simple contagion which spreads upon a single contact.

MINIMUM ACTION

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Source support: Explicit

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