Empiriceme · Evidence · Bias / Effect

Actor–Observer Asymmetry

People tend to explain their own behaviour more situationally and others' more dispositionally, though a large meta-analysis found no general asymmetry.

You were late because traffic was terrible; they were late because they are disorganised. Malle's 2006 meta-analysis of 173 studies found near-zero average effects and no overall asymmetry, so the classic hypothesis is far weaker than its textbook standing suggests.

In practice

  • Your project slipped because the vendor was late; theirs slipped because they cannot plan.
  • A driver who cuts across two lanes is a maniac; when you do it, you were about to miss the exit.
Possible explanations
One explanation is perspective: the actor is looking at the situation and the observer is looking at the actor. Another is motivation, since a situational account of one's own failure is more comfortable.
In its favour
The asymmetry does appear for negative and intentional events, which is where Malle's analysis located the surviving effects.
Against it
His meta-analysis of 173 studies found no general asymmetry, so the textbook version is unsupported; it survives because the example, your traffic against their disorganisation, is memorable.
Standing
Malle's 2006 meta-analysis found no general actor-observer asymmetry; the classic strong form is unsupported.
Further reading
Wikipedia
Subject
Psychology & Behavior
Essay
A century and a half of measuring the mind

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