The document discusses different aspects of interviewing as a marketing research method. It defines interviewing as collecting data by asking questions and following up on answers. There are different types of interviews including individual face-to-face, focus groups, and in-depth interviews. Successful interviews require the respondent to have relevant information, understand what is expected of them, and be motivated to answer accurately. The interviewer's tasks include locating respondents, obtaining the interview, asking questions, and recording responses. Training and supervision of interviewers is important to minimize errors.