Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M1052

Cohort Analysis

Cohort Analysis
BusinessHigh supportProduct Management
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Instead of looking at averages, users are grouped by their "birth date" (registration time), and the behavior changes of each group are observed in the subsequent 1st week, 1st month, etc.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Expose illusions: If the total number of users is increasing, but the "first-month retention rate" of new users is declining month by month, it indicates that the product is "getting worse." This fatal signal can only be seen through cohort analysis.

anchor

Anchor fast decisions

Cohort analysis groups users by the same time period or experience, tracking the retention and behavior of each group over time.

MINIMUM ACTION

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Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Cohort_analysisZH · Explicit
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