The two things happened close together in time. A causal explanation was produced immediately.
The tendency to focus on the nominal (face) value of money rather than its real purchasing power after accounting for inflation or deflation.
A Scene Worth Recognising
A product team reviews the features that made their last three launches successful and sets out to replicate every pattern they find. The review is thorough — but it only covers the launches that went well. The four features that appeared in failed launches and were quietly removed do not make it into the analysis. What drives the next roadmap is shaped by Money illusion.
What it means and how it works
People rely on nominal figures as a simple heuristic for value, a process reinforced by everyday pricing conventions and the salience of face‑value numbers. Cognitive laziness and the difficulty of mentally adjusting for inflation cause the nominal anchor to dominate judgments, even when individuals are aware of inflation in the abstract.
Money illusion occurs when individuals evaluate economic outcomes based on the absolute number of currency units they see, ignoring changes in the price level that affect what those units can actually buy. This can lead to misjudgments about wealth, income, wages, prices, and savings because the real value of money is overlooked.
Why it matters
Money illusion influences wage negotiations, consumer spending, investment decisions, and policy perceptions. For example, workers may accept nominal wage cuts that are actually real wage gains during deflation, or resist nominal wage increases that fail to keep up with inflation, affecting labor markets and macroeconomic stability.
The verified research on this pattern supports the following:
- Experimental studies show that people react to nominal changes in income or prices as if they were real changes, even when inflation is held constant.
- Money illusion arises from the use of nominal values as a cognitive heuristic that simplifies complex economic evaluations.
Common misunderstandings
Misunderstanding 1: Money illusion is simply a lack of knowledge about inflation; in fact, it persists even when people know inflation exists.
Misunderstanding 2: It only affects consumers; investors and professionals are immune.
Misunderstanding 3: Adjusting for inflation eliminates the bias entirely, whereas residual nominal focus often remains.
Sources
- Niroula, Rishab. REV 2.0 Topic Catalog. Hello to Halo.
- Kahneman, Daniel. Thinking, Fast and Slow. Farrar, Straus and Giroux, 2011.
- Cialdini, Robert B. Influence: The Psychology of Persuasion. Harper Business, 2006.
- Thaler, Richard H., and Cass R. Sunstein. Nudge: Improving Decisions About Health, Wealth, and Happiness. Yale University Press, 2008.
The next time this pattern surfaces, the move is not to fight it — it is to notice it. Naming Money illusion creates a moment of pause before the decision. That moment is usually enough.