Attribution theory: Self-serving bias.

The idea

Self-serving bias is the tendency to attribute success to internal causes and failure to external causes, protecting self-esteem. A netball shooter who scores attributes it to internal, stable, uncontrollable ability or internal, unstable, controllable effort; when she misses, she blames external, unstable, uncontrollable luck or task difficulty. The bias raises confidence after wins but can block learning after defeats, because the performer never accepts responsibility for weaknesses. Coaches counter it by reviewing performance evidence, praising effort, and asking performers to identify one controllable cause of failure. It differs from attribution generally: attribution is any perceived cause, whereas self-serving bias favours the self.

What earns the marks

• Self-serving bias is attributing success internally and failure externally.
• Success is typically credited to internal causes such as ability (stable, uncontrollable) or effort (unstable, controllable).
• Failure is typically blamed on external causes such as luck (unstable, uncontrollable) or task difficulty (stable, uncontrollable).
• Its function is to protect self-esteem and maintain confidence and motivation.
• A limitation is reduced learning after failure because responsibility is not accepted.
• Coaches can reduce it by using evidence, effort feedback and controllable-cause review.

Common mistakes and how to put them right

• Incorrectly classifying Weiner's dimensions.

  Put it right: Ability is internal, stable and uncontrollable, whereas effort is internal, unstable and controllable.

• Defining self-serving bias as always blaming others.

  Put it right: It also covers crediting the self for success, so both directions are needed.

• Confusing it with learned helplessness, which is attributing failure to internal, stable, uncontrollable causes and expecting continued failure.

• Thinking the bias always helps performance.

  Put it right: It protects self-esteem but can prevent a performer from correcting genuine weaknesses.

Exam tips

• State both halves of the pattern: internal credit for success and external blame for failure.
• Give one concrete sport example showing the same performer in both outcomes, correctly applying Weiner's dimensions.
• Evaluate the bias by naming one benefit (self-esteem) and one cost (blocked learning).