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46 Methods and materials<br />

moderator, who aims at focusing the discussion, and is therefore also known as focus<br />

group interviewing. One of the advantages of interviewing lies in its flexibility:<br />

the interviews can be guided, offering a possibility to explain complicated questions<br />

or even show actual stimuli in the form of products or advertisements (Kotler,<br />

2012). The challenges presented in using both individual interviewing and group<br />

interviewing are the inability to generalize results due to low sample sizes (Kotler,<br />

2012, Portigal, 2013) and the focus on measuring current buying behavior and a<br />

weaker ability to predict future buying behavior as well as the research taking place<br />

in an unnatural context (Portigal, 2013). A particular issue with group interviewing<br />

is that subjects are not always willing to be open and honest, in particular towards<br />

other subjects of the focus group interview (Kotler, 2012).<br />

4.2 Overview of the samples<br />

Table 6 summarizes the various samples used in the practical part in terms of age,<br />

gender and nationality. These will be detailed further on.

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