Use your list of standard questions during each interview so that you treat the applicants the same and so that you can compare apples to apples.
Refer to the criteria for analyzing candidates. Ask questions that relate to the job criteria.
Keep all questions job-related.
Do not ask discriminating questions.
Show a genuine interest in every candidate you interview.
If possible, have at least one other person meet and/or interview candidates who are finalists. They should also rate the candidates on each of the criteria; ultimately, all interviewers should compare their ratings and discuss any discrepancies. Having more than one interviewer helps control for personal biases.
