The objectivity of rating scales used in interviews can be improved by clearly describing the meaning of each point on the scales. These benefits may be most apparent when ratings are made at the end of the interview or are based on multiple questions. Notetaking requires justifying the ratings, and this encourages interviewers to attend to candidate answers and to organize their thoughts, thus possibly increasing accuracy, recall, and consistency. Use Multiple Interviewers Multiple interviewers improve the interview in several ways. They reduce the effects of idiosyncratic biases by balancing out the different viewpoints.
Relevant information is less likely to be missed with multiple interviewers.
Also, improper questions or evaluations are reduced because multiple interviewers provide a check on each other. Use the Same Interviewers Across All Candidates Using fewer interviewers enhances consistency compared to having a great number of people involved in the interviewing process. This is particularly important when other aspects of the interview are unstructured because different interviewers tend to ask different questions and evaluate answers differently. Between Interviews Discussing candidates or answers between interviews may lead to possible problems by introducing irrelevant information into the decision process, by causing standards to change from one interview to the next, or by forming favorites among the candidates. It is better to wait until all the interviews are completed, and then compare all candidates at the same time based on complete information.