Case file
Mental Accounting
- Filed under
- Not Enough Meaning
The charge
Mental accounting is treating money or resources differently based on arbitrary labels instead of on total value and best use.
How it operates
Separate mental buckets simplify decisions but hide opportunity costs and the fact that resources are often fungible.
Logged incidents
- Incident 01
A company spends leftover training budget on low-value courses while postponing needed tooling.
- Incident 02
An investor takes wild risks with house money gains.
- Incident 03
A consumer keeps low-yield savings while carrying expensive credit-card debt.
What to watch for
Ask: Would I make the same choice if all these dollars sat in one pool?
Recommended action
Review decisions at the total-budget or total-portfolio level and compare opportunity costs across buckets.
Known associates
- Appeal to ProbabilityAppeal to probability fallacy is assuming that because something could happen or is plausible, it probably…
- Normalcy BiasNormalcy bias is underestimating the possibility and impact of disaster because the present still feels…
- Murphy's Law (as cognitive bias)As a cognitive bias, Murphy's Law is the tendency to overexpect that things will go wrong, often in chains,…
- Zero-Sum ThinkingZero-sum bias is assuming one person's or group's gain must come at another's expense, even when mutual gain…
- Survivorship BiasSurvivorship bias is drawing lessons from the cases that remain visible while missing the failures that…
- Subadditivity EffectSubadditivity effect is assigning higher total probability when a broad category is unpacked into specific…
Source of record