Oddly Wired
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beliefs

You defend your beliefs after seeing contrary data.

The 'backfire effect' refers to a proposed psychological phenomenon where contrary evidence strengthens existing beliefs, but empirical support for this effect is inconsistent and it is rarely observed in practice.

Recent research and meta-analyses indicate that individuals are more likely to accept corrections to misinformation than they are to double down, making the backfire effect a rare exception rather than the norm.

Evidence does not always lead to accuracy.

Where this comes from

Study
Nyhan and Reifler, 2010
What the check found
While the 2010 study is the famous origin of the term, the effect has failed to replicate consistently. It is not a standard psychological rule, but an elusive, rare phenomenon.
Confidence
Solid, with limits

Related

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