Train interviewers before they meet the first candidate

Teach the role before the technique

Review why the role exists, its outcomes, boundaries, level, and practical expectations. Ask interviewers to explain the role in their own words and resolve differences. Someone cannot assess evidence consistently while holding a different job in mind. Include what remains uncertain so interviewers do not fill gaps with personal promises.

Assign a bounded responsibility

Show each interviewer the criterion they own, why it matters, and how other stages cover the rest. Give them a consistent core question and planned probes. Discourage adding favourite brainteasers or duplicating another interviewer’s topic. A bounded role reduces interview length and helps the candidate understand why each conversation feels different.

Practise evidence collection

Use sample answers of varying quality. Have interviewers write what was actually observed, separate candidate ownership, and rate against anchors. Compare notes before discussing impressions. Practise neutral follow-ups when context is missing and stopping politely when an answer has supplied enough evidence. This is where vague criteria and loaded questions become visible.

Set candidate experience standards

Cover introductions, agenda, timekeeping, question time, accessibility adjustments, and what interviewers may say about next steps. Tell panel members how to handle a question they cannot answer. Consistency does not require robotic delivery; it requires that every candidate receives the information and assessment opportunity the process promises.

• Role explained consistently
• Criterion ownership understood
• Evidence notes practised
• Logistics and hand-off confirmed

Run a mock interview

Illustrative example: a finance leader plans to assess commercial judgment but asks only for broad career history. During practice, the trainer introduces a sample answer and the leader struggles to connect notes to the scorecard. They rewrite the prompt around a pricing tradeoff, add ownership probes, and define mixed evidence. The correction happens before a candidate bears the cost.

Create a readiness gate

Before scheduling, confirm each interviewer attended or completed an equivalent one-to-one briefing, can access materials, and has protected time for notes. Replace unavailable panel members with trained backups rather than last-minute volunteers. Review interviewer feedback after the first complete loop for process problems, but avoid changing standards simply because one candidate was unusual. Give coordinators permission to stop an interview from being assigned to someone who missed the readiness gate. Seniority should not exempt a panel member from preparation. If repeated availability problems force substitutions, redesign the panel around people who can reliably perform the work. Publish the trained backup list with clear criterion ownership centrally.