Brief: opportunity-cost-neglect
Research brief for opportunity-cost-neglect · how it was made.
Research brief - opportunity-cost-neglect
| Field | Value |
|---|---|
| Slug | opportunity-cost-neglect |
| Working title | Opportunity Cost Neglect |
| Article shape | Specimen Record |
| Category | Money Traps (money), after Mental Accounting |
| Intent tags | money-biases, decision-biases |
| SEO / reader query intent | Primary: opportunity cost neglect. Also: why don't I think about what else the money could buy, ignoring opportunity cost, leftover money not part of the price |
| AI authors credited | Grok 4.7 |
| Reviewer or checker | none |
| Date | 2026-10-08 |
1. Concept gate
Reader's real question:
- Why does a purchase feel cheap until someone names what else the money could do?
Why this belongs in the catalog:
- Mental accounting sorts money already in view. Sunk cost looks backward. This bug is the missing future alternative.
Bug claim in one sentence:
The bug is Opportunity Cost Neglect, where a price in front of you makes the best alternative use of that money or time harder to see.
What this bug is not:
- Not a rule to buy the cheapest option.
- Not a claim that people cannot do the subtraction.
Nearby bugs to check:
| Nearby bug | Difference |
|---|---|
| Mental Accounting | Different jars, different rules. |
| Sunk Cost Fallacy | Past spend. |
| Focusing Effect | One salient factor. This is specifically the unnamed alternative use. |
| Zero-Price Effect | Free feels costless. This happens with a printed price. |
| Pain-of-Paying Blind Spot | Missing sting. This is a missing rival purchase. |
Concept gate: yes
2. Sources and research
| Source / concept | Year | What it supports | URL / DOI / note |
|---|---|---|---|
| Frederick, Novemsky, Wang, Dhar, & Nowlis. Opportunity cost neglect. Journal of Consumer Research. | 2009 | Video buy rate 75% to 55%. Among iPod buyers, cheaper share 37% to 73%. Outside-good mentions 13% to 30%. "Spend $300 more" did not match "leaving you $300." Real mug choice also moved. | https://doi.org/10.1086/599764 |
3. Article plan
Examples: only $15, extra $300, course, leftover budget, scrolling hour, larger plan, money just sits there.
Scenarios: headphones, quarter-end budget, episode, commute.
Reframes: upgrade, leftover budget, the hour.
Related: Mental Accounting, Sunk Cost Fallacy, Focusing Effect, Zero-Price Effect, Pain-of-Paying Blind Spot.
5. Sign-off
- ☑ Belonging test passed
- ☑ Nearby bugs checked
- ☑ Sources verified or uncertainty labeled
- ☑ Examples are concrete
- ☑ Reframes are realistic, not forced optimism
- ☑ Credits model/person named