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Attributional Errors & Biases


Attributions are how we explain or understand people's behaviour — including ourselves.

Two main types of attributions:
1. Dispositional - we attribute people's behaviour to personal factors (personality, intelligence, etc.)
2. Situational - we attribute people's behaviour to environmental factors


Example: a coworker shows up late to work
  • Dispositional attribution: "They're too lazy to wake up early", "They don't care about this job"
  • Situational attribution: "They must have gotten stuck in traffic", "Maybe their new baby kept them up all night so they slept in by accident"

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Fundamental Attribution Error: when explaining the behaviour of others, we tend to underemphasize situational factors and overemphasize dispositional factors
  • Example: if someone cuts you off in traffic, you're more likely to think they are a careless or bad driver rather than considering if you were in their blind spot

Self-serving bias: we tend to use dispositional attributions for our successes and situational attributions for our failures
  • Example: if I do well on a test, it's because I'm smart and a good student, but if I do poorly, it's because I didn't get enough sleep the night before and my classmate's pen clicking was distracting me

Actor-observer bias: we tend to use dispositional attributions for other people's behaviour but situational attributions for ourselves
  • Example: if a doctor tells someone else they don't exercise enough, you might think they're lazy or unmotivated. If a doctor tells you this, you might say it's because you're too busy with work or don't live close to a gym.