Attribution theory is the study of how people explain the causes of behavior and events. Developed by Fritz Heider and extended by Edward E. Jones, Harold Kelley, and others, the theory proposes that people function as informal causal analysts, constructing explanations that attribute outcomes to internal dispositions (character, ability, intention) or external situations (context, difficulty, luck).
Heider’s foundational insight is that the same observable behavior can be explained in multiple ways, and the explanation chosen shapes how the observer responds. If a student fails an exam, attributing the failure to laziness (internal) produces a different social response than attributing it to an unfair test (external). Attribution is not a neutral cognitive operation — it carries moral, social, and political weight.
The theory has generated extensive research on systematic biases: the fundamental attribution error (overweighting dispositional explanations for others’ behavior), the actor-observer asymmetry (explaining one’s own behavior situationally but others’ dispositionally), and self-serving bias (attributing success internally and failure externally). These patterns reveal attribution as a site where social structure shapes cognition — who gets the benefit of situational explanation depends on power, identity, and group membership.