Availability¶
Tversky, A., & Kahneman, D. (1973). Availability: A Heuristic for Judging Frequency and Probability. Cognitive Psychology, 5(2), 207-232.
Cited by¶
12 citations across 12 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Wild Cards
- The clarity also distinguishes healthy foresight from rumor-mongering or apocalyptic speculation: disciplined wild-card methodology requires plausible mechanisms, systematic review, and prioritization, all of which constrain the watchlist to events that warrant genuine attention — countering the availability heuristic Tversky and Kahneman (1973) document, by which recent or vivid events are mistaken for probable ones.
This sourceFoundational treatment of the availability heuristic: people judge the probability of events by how easily examples come to mind, systematically overweighting recent or vivid events and underweighting unfamiliar ones; the cognitive-bias backdrop against which disciplined wild-card methodology must operate.
- The clarity also distinguishes healthy foresight from rumor-mongering or apocalyptic speculation: disciplined wild-card methodology requires plausible mechanisms, systematic review, and prioritization, all of which constrain the watchlist to events that warrant genuine attention — countering the availability heuristic Tversky and Kahneman (1973) document, by which recent or vivid events are mistaken for probable ones.
Domain-specific¶
- Availability Heuristic
- Tversky and Kahneman introduced it in 1973 ("Availability: A heuristic for judging frequency and probability")
This sourceThe K, L, N, R, V letter-position study, in which 105 of 152 subjects judged the first position more frequent and the median estimated ratio was 2:1.
SupportedVerified against the source
- Tversky and Kahneman introduced it in 1973 ("Availability: A heuristic for judging frequency and probability")
- Spotlight Fallacy
- The fallacy is the informal-logic label for the same inferential error that Tversky and Kahneman (1973) named the availability heuristic — the tendency to estimate frequency by how easily instances come to mind
This sourceTversky and Kahneman's naming of availability as a heuristic for judging frequency and probability.
Supported in partVerified against the source
- The fallacy is the informal-logic label for the same inferential error that Tversky and Kahneman (1973) named the availability heuristic — the tendency to estimate frequency by how easily instances come to mind
Mechanisms¶
- Case Story Library
- It is the standing defense against letting the most available story stand in for the typical one.
This sourceShows that judgments of frequency and probability often follow ease of recall rather than ecological frequency, creating systematic availability bias.
- It is the standing defense against letting the most available story stand in for the typical one.
- Constraint and Incentive Checklist
- Its strength is that it is a habit, not a project: cheap and portable enough to run before any judgment, it counters the availability heuristic
This sourceThe availability heuristic bases frequency and probability judgments on how easily relevant instances come to mind.
- Its strength is that it is a habit, not a project: cheap and portable enough to run before any judgment, it counters the availability heuristic
- Media Literacy Briefing
- Much of what it teaches is a defense against the availability heuristic — the tendency to judge a risk by how easily a dramatic instance comes to mind rather than by how often it truly occurs — which is the cognitive lever sensational framing pulls.
This sourceThe availability heuristic makes frequency and probability judgments depend on how easily relevant instances come to mind.
- Much of what it teaches is a defense against the availability heuristic — the tendency to judge a risk by how easily a dramatic instance comes to mind rather than by how often it truly occurs — which is the cognitive lever sensational framing pulls.
- Narrative Representation
- Its failure mode is that a single vivid story overpowers the base rate: a compelling anecdote feels like proof and shifts a decision more than a thousand quieter cases should.
This sourceShows that vivid or easily recalled instances can dominate judgments of frequency and probability despite quieter base-rate evidence.
- Its failure mode is that a single vivid story overpowers the base rate: a compelling anecdote feels like proof and shifts a decision more than a thousand quieter cases should.
- Resilience Planning Workshop
- Its central distortion is the availability heuristic: the room maps the disaster it remembers most vividly — usually the last one — and under-weights the shock it has never lived through, so the scenario list quietly re-fights the last war.
This sourceDefines the availability heuristic as judging frequency or probability by how easily incidents or scenarios come to mind, producing systematic bias.
- Its central distortion is the availability heuristic: the room maps the disaster it remembers most vividly — usually the last one — and under-weights the shock it has never lived through, so the scenario list quietly re-fights the last war.
- Salience Red Team
- Its strength is countering a consensus that has quietly formed around the vivid and the available rather than the important — the availability heuristic operating on a group.
This sourceDefines the availability heuristic as judging frequency or probability by ease of recall and shows that salient or readily retrieved instances can bias those judgments.
- Its strength is countering a consensus that has quietly formed around the vivid and the available rather than the important — the availability heuristic operating on a group.
- Scenario Sampling Workflow
- Its failure mode is that vivid individual scenarios are psychologically overpowering — a single memorable tail case can hijack a decision out of all proportion to its likelihood, the availability heuristic operating in full force.
This sourceShows that memorable incidents and compelling or vividly portrayed scenarios inflate subjective likelihood and can suppress consideration of alternatives.
- Its failure mode is that vivid individual scenarios are psychologically overpowering — a single memorable tail case can hijack a decision out of all proportion to its likelihood, the availability heuristic operating in full force.
- Search and Documentation Scan
- Its strength is that it replaces "I noticed a bad label once" with a measured pattern — it is the corrective to the availability heuristic
This sourceShows that easily recalled, vivid instances can be mistaken for evidence that an event is frequent.
- Its strength is that it replaces "I noticed a bad label once" with a measured pattern — it is the corrective to the availability heuristic
- Wild-Card Workshop
- Its central failure mode is that what a room generates is skewed by the availability heuristic
This sourceShows that judgments of frequency and probability are biased toward examples that are easy to recall, especially vivid, recent, or salient events.
- Its central failure mode is that what a room generates is skewed by the availability heuristic
Verification¶
Does it exist? Confirmed. This work's DOI resolves to a registered record, which fixes its identity. That is all it fixes.
Does it back the claim? Read against the text for 2 of 12 citations: 1 supported, 1 supported in part. Each verdict is shown under its citation below, with what in the work backs the sentence.
Was it audited? Yes. A second, independent pass read the citation against the article text and recorded a verdict.
Support is checked per citation rather than per work — the same source can be cited soundly in one article and wrongly in another. Per-citation recording began recently, so a citation with no recorded check is a gap in the record rather than evidence it went unchecked.
See how references were verified.
Registry ID ref:723760d16e30 · see in the full table