That said, it’s also the most limited and least personal.
Sending someone a questionnaire to fill out can backfire in a few important ways: As a general rule, interview in person whenever you can.
Are they being asked the same questions over and over again?
Look for a different angle or a way to surprise them; in-demand experts love when an interview feels like something new instead of a rehash of past engagements.
Interviewers often try to shape the interview to get experts to say very particular things.