ฃThe interview component of the study is based upon informal conversational
face-to-face interviews with key informants. According to Patton (1980), the
informal conversational interview has a number of advantages, including assuring
that questions are relevant, allowing the interview to emerge from concrete
observation, and taking into account individual and specific circumstances.
The pool of interviewees is composed of four groups. The first three groups
are constituted as purposive samples, while the fourth group is an extreme case