Bias Hunter is the most studied form of cognitive training. The logic is simple: people who can name a bias recognize it in the wild faster than people who vaguely know that biases exist. Naming is load-bearing — ambiguous awareness doesn't transfer, precise vocabulary does.
Each challenge presents a short scenario — an argument, a recommendation, a decision — and asks you to identify which named bias is most operative. Availability? Sunk cost? Confirmation? Base-rate neglect? Anchoring? The answer is never a judgment call on whether the decision was good. It's a judgment on which bias best explains the reasoning pattern.
Why this first? Because every other MindFrame mode assumes bias fluency as a prerequisite. Lab asks you to notice when you're overconfident — much easier when you can name the specific variant. Reframe Forge asks you to replace a distorted thought — much easier when you can classify the distortion. Bias Hunter is the dictionary the rest of MindFrame uses.
This trains
Bias awareness
The ability to correctly name the operating in a reasoning sample, in real time, across contexts you haven't seen before.
How a session feels
4 steps, 3–5 minutes. Repeat until the feedback starts shaping your instincts.
- 1
Read the scenario
A 2–3 sentence argument, decision, or quote — the kind you'd see in a meeting or a news article.
- 2
Pick the bias
Four named biases are shown. Choose the one that best explains the reasoning pattern, not the one that sounds closest.
- 3
Rate your confidence
How sure are you? The Brier-score component of your session depends on honest rating.
- 4
See the why
If you get it wrong, the explanation shows why the decoy bias feels similar but misses — and why the correct bias is load-bearing.
Example challenge
A representative prompt. The real session varies the difficulty and format.
A doctor says: 'In my 20 years of practice, I've seen far more complications from Treatment A than Treatment B. I strongly recommend B.' Which bias is most operative?
- Availability heuristic
- Confirmation bias
- Sunk-cost fallacy
- Base-rate neglect
Why this answer
Availability — the doctor is weighing instances he personally saw, not the actual complication rates across both treatments. Base-rate neglect is tempting but secondary: the core move is substituting recall frequency for true frequency.Who it's for
- Consultants and analysts — your recommendations are only as good as your bias detection
- Researchers and journalists — recognizing bias in sources is the job
- Anyone who has made a confident prediction and been wrong — that's the signal to start here
Try a challenge — no sign-up
The demo pulls from the public challenge bank. Your confidence rating and result are the same mechanics you'll see in the real mode.
Start with Bias Hunter
Your first session generates a score baseline in under 10 minutes.