1.This sentence means that if you will prepare for interview this will help you tailor the interview to the interviewee's role in the larger subject of your study.Know as much as you can about the interviewee before you go to the interview.
1)A formal meeting in person, especially one arranged for the assessment of the qualifications of an applicant.
2)(a)A conversation, such as one conducted by a reporter, in which facts or statements are elicited from another.
(b)An account or a reproduction of such a conversation.
3)Informal An interviewee: "I had been warned that [he] was a tough interviewthat he doled out flip answers ... to questions he was tired of being asked" (David Roberts).
1.This sentence means that sending the interviewee a list of your questions help your interviews, and it could be generally improved .Interviews are generally improved by sending the interviewee a list of your questions or a summary of what kinds of questions you'll be asking--in this latter case being sure that your summary is written in neutral terms that won't prejudice the interviewee toward a certain perspective