Behaviour observation scales are very similar to behaviourally anchored rating scales (BARS) in that the starting point is an analysis of critical job incidents by those knowledgeable about the job to establish performance dimensions.

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Behaviour observation scales (BOS) and behaviourally anchored rating scales (BARS) are similar in that they both involve an analysis of critical job incidents to establish performance dimensions. BOS focuses on observing and recording specific behaviours exhibited by employees in order to accurately evaluate their performance, whereas BARS involves using specific behavioural examples to anchor performance levels on a rating scale.

Behaviour Observation Scales Are Very Similar to Behaviourally Anchored Rating