Oddly Wired
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attribution error

You judge the actions of your group more leniently.

When a member of your own group fails, you attribute it to bad luck; when an outsider fails, you attribute it to their incompetence.

This is the ultimate attribution error. It protects your tribal identity by creating a double standard for behavior. You rationalize the mistakes of your 'in-group' while applying rigid standards to those outside it.

You are blind to the flaws that you have already forgiven.

Where this comes from

Study
Pettigrew (1979), ultimate attribution error
What the check found
The claim accurately captures the behavior-specific component of Pettigrew's (1979) theory. While it omits the success-side of the bias, the description of failure-attribution is correct.
Confidence
Solid, with limits
attribution errorsocial psychologybias

Related

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