Without calibration, two QA reviewers listening to the same call will often score it differently. Agents quickly learn whose review to hope for — and trust in the QA process collapses. Calibration is how you fix this.
Call calibration is the process of having two or more QA reviewers independently score the same recorded call using the same scorecard, then comparing and reconciling the scores to align on interpretation standards and ensure consistency.
A QA scorecard is only as objective as the people applying it. The same criterion — "agent acknowledged the customer's objection" — can be interpreted differently by two reviewers:
Without calibration, Agent X who is reviewed by Reviewer A and Agent Y reviewed by Reviewer B are not being evaluated against the same standard. Their scores are not comparable — making any team-level QA data meaningless.
Some reviewers naturally give the benefit of the doubt. Over time, their agents accumulate higher scores for the same behaviours — creating perceived favouritism and damaging team morale.
When an agent disputes a low score, the QA manager needs documented, calibrated interpretation guidelines to reference. Without them, disputes become arguments with no objective resolution.
If reviewer assignments change month to month, QA score trends may reflect who is doing the reviewing, not actual changes in agent behaviour. Calibration is what makes trends meaningful.
Choose calls that cover a range of quality levels — one excellent call, two average calls, one call with clear compliance gaps. Do not select only extreme examples.
All reviewers score the same calls without discussing them first. Each uses the shared scorecard and marks their scores and notes privately.
Go through each scorecard item for each call. Where scores differ, the reviewer with the different score explains their reasoning. The group discusses and reaches consensus.
Any agreed interpretation — "a 3-second pause before responding counts as acknowledgement" — goes into a written calibration guide. This becomes the reference document for future disputes.
Particularly when criteria change, when new reviewers join, or when agent disputes have been rising. Calibration is not a one-time activity — it is ongoing maintenance of the QA process.
Calibration sessions are significantly more efficient when using transcripts rather than audio. Reviewers can read at their own pace, highlight specific passages that drove their scores, and reference exact quotes in the discussion. A calibration session that takes 90 minutes with audio takes 30 to 40 minutes with transcripts.
Upload the calibration calls to Bolo Aur Likho to get instant transcripts, then share the transcripts with all reviewers before the calibration session.
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