The Bandwidth Tax
Mullainathan and Shafir (2013), in their research on scarcity, found something that reframed how I think about crisis-time decision-making: scarcity itself consumes cognitive bandwidth. Not metaphorically. Measurably. Their research found that financial scarcity can reduce effective cognitive capacity by an amount comparable to losing a full night’s sleep, or more, because so much mental processing gets consumed by the scarcity itself.
This lines up precisely with what I’ve called crisis-time consciousness. It’s not that people in crisis are less capable. It’s that crisis imposes a real, measurable cognitive tax, and any curriculum that doesn’t account for that tax is testing people under conditions it never disclosed.
Where this extends my own thinking: it gives a mechanism, a “why,” for something I’d only described phenomenologically before. Scarcity isn’t just a felt experience of urgency. It’s an actual constraint on available cognitive resources, which means asking someone in acute crisis to absorb a thirty-minute lecture on compound interest isn’t just unhelpful, it’s asking their mind to do something it currently has reduced capacity to do.
I talk through this connection more in this week’s episode.
Genuinely curious what your own network would say: when you hear “financial literacy,” what does that term actually mean to you, in your own work or life?
Author: Sandra Roussel
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