MENTAL MODEL · M3369

Feature Fatigue

DecideHigh supportDecision Science

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Updated 2026-08-01

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INTRODUCTION

English translation pending.

CORE DEFINITION

Feature fatigue is the pattern identified by Roland Rust, Debora Thompson, and Rebecca Hamilton: consumers weigh capability heavily when choosing a product but weigh usability heavily once they own it. A longer feature list wins the sale and loses the user, because every added capability raises learning cost and cognitive load. The gap between the choosing self and the using self is what makes the trade-off so easy to get wrong.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Choosing self check: ask what you will actually use, not what sounds impressive. - Usability budget: count the learning cost that each added feature imposes. - Sell with addition, keep with subtraction: match the feature set to the phase of the relationship.

anchor

Anchor fast decisions

Capability is easy to evaluate in a comparison table, while usability only becomes visible through use. Buyers therefore over-weight features at purchase and discover the cost afterwards, so the product's realized value falls even though nothing about the product itself changed.

MINIMUM ACTION

In progress 0/1

Practice this model in one real situation:

List the features you use weekly and set the rest aside. 2. Price each feature by the time it takes to learn. 3. Choose the smaller set that covers your core tasks. 4. For products you build, cut features few users touch. 5. Measure satisfaction after use rather than preference before purchase.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
rhsmith.umd.eduhttps://www.rhsmith.umd.edu/node/1681ZH · Explicit
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