Oddly Wired
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bias

You see biases in others but never in yourself.

The bias blind spot is the tendency to identify the cognitive biases of others more readily than one's own.

Replace 'while remaining completely unaware of your own' with 'while underestimating the impact of biases on your own judgment'.

The only bias you will never be able to see is your own.

Where this comes from

Study
Emily Pronin, 2007
What the check found
The definition is directionally correct but incorrectly frames a relative 'blind spot' as a state of total unawareness.
Confidence
Solid, with limits
biasmeta-cognitionself-awarenesspsychology

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.