Additional Information
Silence is a key skill needed for interviewing. Allowing for silence might be uncomfortable, but it allows the candidate to collect their thoughts and help the interviewing process.
Effective & Legal Interviewing/Hiring
Being uncomfortable with silence during an interview may be the most common problem interviewers face, and most will just change the subject and move on. But look at it this way. When candidates are silent, it usually means they're thinking. That silence is your friend, your tool. If you change the subject and move on, you may be shutting down a revealing answer. So respect silence.
Silence is a key skill needed for interviewing. Allowing for silence might be uncomfortable, but it allows the candidate to collect their thoughts and help the interviewing process.