Severus, the manager of a provincial credit union, hired five new tellers based solely on their interviews. Although Severus thought he had planned the candidate interviewing process well, the three candidates who were rated the highest in the interview, and hired, did not meet the basic performance expectations once they were on the job. Which of the following is the primary problem associated with these interviews?

Question $57$ options:

Integrity

Reliability

Validity

Stability