1.2. Semi-structured interviews
Interviews will help to gain an understanding of, and clarify the initial findings. In addition, if new themes start emerging, it will be possible to adjust the interview guide, ask more detailed follow-up questions, and therefore generate new findings. Another advantage of an interview is data granularity. As Lazar et al. (2017, p. 106) mentioned, “A survey is very good at getting limited shallow data from a large number of people, but is not very good at getting deep, detailed data”. In contrast, interviews can discover the core problems, offering a more complete picture of the users’ needs. This does not mean, however, that the interview will have specific questions only. In fact, interviews will start with general questions and move towards more specific ones over the course of the session. As Lazar et al. (2017) pointed out, the process of gathering requirements necessitates asking “broader questions about current—possibly non-computer—practices, future goals, frustrations and concerns” (Lazar et al., 2017, p. 193).