A survey in which respondents are asked questions in face-to-face interviews, i.e., orally, rather than replying to written questions. This has the advantage that respondents do not know what questions are to come when responding to a particular question, so their answers are unlikely to be influenced by their perception of what the interviewer would “like” them to say or really wants to know. Thus, interviews are a good method of assessing attitudes, beliefs, values, and opinions. On the other hand, they are labor intensive and therefore more costly compared with self-completed questionnaires.
Subjects: Public Health and Epidemiology.