Bandwidth Tax
Updated 2026-08-10
INTRODUCTION
English translation pending.
CORE DEFINITION
Described by Sendhil Mullainathan and Eldar Shafir in research on scarcity, the bandwidth tax is the cognitive cost of having attention captured by an unmet need. Whether the shortage is money, time or something else, it occupies working memory and executive control, measurably lowering fluid intelligence and decision quality. Because the resulting decisions are worse, scarcity tends to reproduce itself. The tax falls on anyone under sustained pressure, not only on those who are poor.
SCAFFOLDING EFFECT
Reduce cognitive load
- Check the load: ask what unresolved pressure is currently consuming your attention. - Free the bandwidth: remove small recurring decisions with automation and sensible defaults. - Schedule the stakes: reserve major decisions for periods when capacity has not already been spent.
Anchor fast decisions
Attention is a limited resource, and an unmet need keeps returning to mind because it cannot be resolved and dismissed. Each intrusion consumes working memory that would otherwise serve the task at hand, which reduces the capacity available for careful reasoning. The impairment is a function of the load rather than of the person's underlying ability.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Scarcity:_Why_Having_Too_Little_Means_So_Muchverified
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