Behaviourally anchored rating scales attempt to reduce the biases of subjective performance measures by placing specific examples of effective and ineffective performance along a scale.

Behaviourally anchored rating scales (BARS) are designed to reduce the biases of subjective performance measures by providing concrete examples of effective and ineffective performance along a scale. This makes it easier for raters to accurately assess performance based on specific behaviors, rather than subjective opinions or vague impressions.