How Can an Organization Improve the Reliability and Validity of Interviews

How can an organization improve the reliability and validity of interviews?

A) Use a standardized job related interview (e.g. structured, panel, or situational)
B) Assure consistency through the use of a single interviewer.
C) Encourage hiring managers to pay attention to their "gut feel".
D) Allow interviewees to share information about their unrelated previous work history.
E) Avoid training managers because is can increase anxiety related to interviewing.