Cognitive Bias Test: Find Your Decision Blind Spots

12 decision moments where a bias might be quietly steering you. Answer honestly — this test only works if you let yourself get fooled. No sign-up.

0 / 12 answered

Job interview. The recruiter goes first: "Budget for this role is around $55k." You'd planned to ask for $70k — but suddenly that number feels greedy, and you hear yourself say "...$58k?"

You've basically decided to buy the new phone. You google "is it worth it" — and click every glowing review while skipping the one-star ones ("probably fake anyway").

You're 200 hours into a mobile game you stopped enjoying months ago. Quit now? "No way — I'd be throwing away everything I've built."

Three break-in videos hit your feed this week. It's 1 a.m. and you're comparing security cameras — even though burglaries in your area are at a ten-year low.

A stock you bought is down 30%. You'd never buy it at today's price — but sell? "It's not a real loss until I sell." So you hold. And hold.

Three weeks on a trading app, four wins in a row. You catch yourself thinking: "Honestly? I could do this full-time."

The coin you almost bought last month just crashed. You tell everyone: "The signs were SO obvious." (Last month you had the buy screen open.)

Every founder podcast you binge tells the same story: dropped out, went all-in, got rich. You start drafting a resignation letter.

You grab the yogurt labeled "90% fat-free" and put back the one that says "contains 10% fat." Same yogurt. You paid extra for the first one.

Q10

Booking a hotel: 214 five-star reviews, one furious one-star about a hair in the shower. Guess which review you've now read four times.

Q11

The pitch deck is gorgeous and the founder is confident, funny, and sharply dressed. You catch yourself thinking the financials are "probably fine."

Q12

You're moving your savings into whatever fund topped the last three months' chart. Ten-year performance? Didn't check — that chart was less exciting.

Answer all 12 questions to see your result 👆

The 12 biases in this test (cheat sheet)

Anchoring: The first number you hear drags every later judgment toward it.
Confirmation Bias: Hunting for evidence that agrees with you, dodging the rest.
Sunk Cost Fallacy: Letting what you've already spent decide what you do next.
Availability Heuristic: Whatever's easiest to picture feels most likely to happen.
Loss Aversion: Losses hurt about twice as much as equal gains feel good.
Dunning-Kruger Effect: The less you know, the more certain you feel.
Hindsight Bias: After the outcome, memory edits itself into "I knew it."
Survivorship Bias: Judging by the winners because the failures are invisible.
Framing Effect: The same fact flips your choice depending on its wrapper.
Negativity Bias: One bad thing outshouts a pile of good things.
Halo Effect: One impressive trait vouching for totally unrelated ones.
Recency Bias: The latest data feeling like the truest data.

What does a cognitive bias test measure?

A cognitive bias test doesn't measure how smart you are or how many bias names you can recite. It measures something sneakier: whether you can recognize a bias while it's happening to you — mid-purchase, mid-scroll, mid-"honestly, I could day-trade." That's why every question here is a scenario you're inside of, not a definition to match.

Here's the uncomfortable part: knowing about biases doesn't make you immune. Psychologists call it the bias blind spot — most people rate themselves as less biased than average, which is statistically impossible and entirely predictable. Biases run in your brain's fast, automatic layer; the definitions you memorized live in the slow, effortful one. And the fast layer wins whenever you're tired, rushed, or emotionally invested — in other words, during every decision that actually matters.

That's also why this test uses first-person traps instead of textbook questions. Defining anchoring is easy; noticing it while a recruiter's lowball number quietly shrinks your salary ask is the actual skill. Each answer comes with a plain-English breakdown of the trap, plus one concrete way to defend against it next time.

The test is completely free: 12 scenarios, instant scoring, no sign-up, no email gate. Retake it any time — scores usually climb once your blind spots have been named to your face.

FAQ

Is this cognitive bias test free?

Yes — 12 questions with instant results and explanations. No sign-up, no email gate.

How accurate is a cognitive bias test?

It's a self-check, not a clinical instrument. What it shows is which traps you fail to recognize in context — the best everyday proxy for what actually fools you.

What's the difference between a cognitive bias and a logical fallacy?

A bias is a systematic glitch in how you think; a fallacy is a flaw in how an argument is built. Biases live in your head, fallacies live in arguments.

How do I reduce my cognitive biases?

You can't delete them, but you can add friction: slow big decisions down, write predictions before outcomes, ask "what would change my mind?", and have someone argue the other side.