Oddly Wired
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belief

Disconfirming evidence can strengthen your initial incorrect belief.

The 'backfire effect' was proposed in 2010 to describe people doubling down on beliefs, but subsequent large-scale research has failed to replicate this as a common phenomenon.

The backfire effect is currently not considered a well-established or common psychological occurrence.

You fight hardest when you are most wrong.

Where this comes from

Study
Nyhan and Reifler, 2010
What the check found
The original 2010 study is the source of the term, but it does not represent current scientific consensus as the effect has failed to replicate consistently.
Confidence
Solid, with limits
beliefcognitionpolarization

Related

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