Run a talent review and calibration
Step 1 / 2·Why calibration is needed
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Learning objectives — after this module you will:
- Prepare and lead a talent-review session
- Run calibration to standardize the bar
- Fight common biases
Why calibration is needed
Understand the link that decides the quality of a talent review.
If each manager rates the 9-box by their own standard, results aren't comparable: manager A's 'high potential' might be manager B's 'medium'. CALIBRATION is a session where multiple managers review the nominations together, agree on a standard, and block bias. This is where the 9-box goes from 'personal opinion' to 'organizational assessment'.
Corporations with strong talent-management systems — like Unilever, famous for leadership development — make talent review and calibration a disciplined annual rhythm, with senior leaders directly reviewing key talent, rather than delegating it to HR as a formality.
Three rules of a good calibration session
- EVERY JUDGMENT WITH EVIDENCE: 'high potential' must have behavioral examples, not a feeling
- ACTIVELY FIGHT BIAS: the chair asks 'who is NOT in the room but deserves to be named?' (fighting visibility bias)
- SEPARATE PERFORMANCE FROM POTENTIAL: don't let 'good at the current job' automatically pull 'high potential' (halo effect)
Four lurking biases
Halo (good at this → assumed good at everything), Recency (a recent quarter overshadows the whole year), Similarity (favoring people like oneself), Visibility (whoever appears often is remembered). Multi-perspective calibration is the strongest antidote.
Key takeaway: Calibration turns the 9-box into an organizational assessment: evidence + bias-fighting + separating performance from potential.