Oddly Wired
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belief perseverance

You cling to your convictions even when proven false.

A 1975 study found that participants still believed in their own ability to detect suicide notes even after researchers told them their previous feedback was fabricated.

The brain builds a narrative around evidence, and once that belief takes root, it operates independently of the original facts. You protect your belief system more aggressively than your accuracy.

Your mind views a change in opinion as a threat to your identity.

Where this comes from

Study
Ross, Lepper, and Hubbard, 1975
What the check found
The study is a classic in psychology literature and is correctly attributed to Ross, Lepper, and Hubbard (1975). The summary of the result aligns with the original findings regarding belief perseverance.
Confidence
Well replicated
belief perseverancecognitionidentity

Related

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