Updated: 23 October 2026

Check your decision for hidden biases

This prompt reviews your reasoning for a decision and points out possible biases, such as sunk cost or confirmation bias.

text-decision-bias-check — chatgpt — 53 words

I am about to decide: [DECISION].

My reasoning: [REASONING]
What I want to happen: [PREFERENCE]

Review my reasoning for cognitive biases such as confirmation bias, sunk cost, overconfidence and anchoring. Quote the parts that show each one, then give me five questions to ask myself and the evidence that would prove me wrong.

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Ask someone you trust to challenge the same points; the AI cannot see your real incentives.

Get a better result

What you will get

A review of your reasoning that names the biases at work, such as confirmation bias, sunk cost, overconfidence and anchoring, quotes the lines that show them, and ends with five questions and the evidence that would prove you wrong.

Common mistake

You write a short, polished version of your reasoning.

Fix: Write it the way you really think, including the doubts and the feelings. Biases hide in the parts you would normally tidy up.

Also watch for

You take every bias claim as true. Treat each as a prompt to check, not a verdict. Ask “what would I say if this were a friend’s decision?”.
The AI cannot see your real incentives, such as money or pride. Follow the tip: ask a trusted person to challenge the same points, and tell the AI about any personal stake in the preference line.

Try a variation: pre-mortem

Add “imagine it is a year from now and this decision failed. List the five most likely reasons and what I could do now to prevent each”.

Still not right? Reply with this

Which one of these biases is most likely to change the outcome? Give me one concrete test I can run this week to check it.