Confirmation bias

An arch-bias, supporting many other biases.

We all hear about confirmation bias, and maybe we even have a habit of keeping it in mind. That doesn't mean it's solved, nor that we should focus on other less-known biases as if they were bigger fish to fry. Paraphrasing Raymond Nickerson 1998: If there were a contest for the single largest problem in human reasoning, confirmation bias would have to be a candidate. No one is free from it.

Countermeasures