diagnosis · evidence-based answer
How do I measure employee performance at work?
The short answer
Separate the signal you want — the person's actual contribution — from the noise that dominates raw ratings, chiefly idiosyncratic rater variance, which often explains more of a score than the ratee does. Define the construct before the scale, use behaviorally anchored items, calibrate raters, and report reliability. Measure conditions and outputs, not personalities.
The problem underneath
Performance ratings are dominated by idiosyncratic rater bias; managers lack a measurement-science framework to separate signal from noise in their assessments.
The evidence
- Eight research arcs spanning behavioral science → analytics craft
- The AI × people-analytics capability encyclopedia
- The source-graded, citation-verified organizational-science registry
- Effect-size / validity findings
Every claim on this site traces to a graded source — see the proof graph.
Go deeper
Related questions
- What are the best ways to measure job performance objectively?
- How do companies measure individual performance without bias?
performance measurementidiosyncratic raterpsychometricspeople analytics