Availability Heuristic
If I Can Recall It Fast, It Feels Common
Fast Rules of Thumb
After seeing one dramatic story about a plane problem, a traveler feels flying is suddenly much riskier than driving.
Learn this bugHeuristics
Fast Rules of Thumb
Heuristics are fast rules of thumb. They are not always bad, but they can make rare events feel common or simple stories feel true.
Why this Category Matters
A quick shortcut can help under pressure, but you need to know when to slow down and double-check.
Inside this Topic
6 lesson pages and 2 comparison links currently live in this section.
How it Differs
Heuristics can be useful.
Biases are the tilted outcomes that often come from shortcuts.
Statistical errors happen when a shortcut ignores the numbers.
Featured Examples
Familiarity Heuristic
If It Feels Familiar, It Feels Safer Or Truer
Fast Rules of Thumb
A person starts trusting a claim mainly because they have heard it again and again.
Learn this bugRepresentativeness Heuristic
If It Looks Like The Pattern, I Assume It Fits
Fast Rules of Thumb
A student seems quiet and bookish, so classmates assume they must be amazing at math without seeing any real evidence.
Learn this bugAffect Heuristic
If It Feels Good Or Bad, I Judge Fast
Fast Rules of Thumb
A shiny product demo feels exciting, so the team assumes the app must be low risk and high value.
Learn this bugScarcity Heuristic
If It Seems Rare, It Feels More Valuable
Fast Rules of Thumb
A student rushes into an expensive workshop because the site says only one seat is left.
Learn this bugBrowse this topic
Recognition Heuristic
I Know The Name, So I Trust It More
Fast Rules of Thumb
A student assumes the best college on a list must be the one they have heard of most often.
Learn this bugAvailability Heuristic
If I Can Recall It Fast, It Feels Common
Fast Rules of Thumb
After seeing one dramatic story about a plane problem, a traveler feels flying is suddenly much riskier than driving.
Learn this bugFamiliarity Heuristic
If It Feels Familiar, It Feels Safer Or Truer
Fast Rules of Thumb
A person starts trusting a claim mainly because they have heard it again and again.
Learn this bugAffect Heuristic
If It Feels Good Or Bad, I Judge Fast
Fast Rules of Thumb
A shiny product demo feels exciting, so the team assumes the app must be low risk and high value.
Learn this bugRepresentativeness Heuristic
If It Looks Like The Pattern, I Assume It Fits
Fast Rules of Thumb
A student seems quiet and bookish, so classmates assume they must be amazing at math without seeing any real evidence.
Learn this bugScarcity Heuristic
If It Seems Rare, It Feels More Valuable
Fast Rules of Thumb
A student rushes into an expensive workshop because the site says only one seat is left.
Learn this bugCommon Warning Signs
A vivid example feels stronger than the data.
Familiar things seem safer or better.
Beginner-Friendly Starting Points
If I Can Recall It Fast, It Feels Common — Availability Heuristic
If It Feels Familiar, It Feels Safer Or Truer — Familiarity Heuristic
If It Looks Like The Pattern, I Assume It Fits — Representativeness Heuristic
If It Seems Rare, It Feels More Valuable — Scarcity Heuristic
Quick Examples
One dramatic story
A single vivid example makes a risk feel huge.
Practice this Topic
Use a short quiz or drill to check whether you can tell this category apart from nearby thinking traps.