It is worth noting that the study does not have a survey base due to the absence of an
exhaustive list of individuals. The selection of sampling units is made following a
non-probability sampling, the convenience sampling being the rational technique of
identification of respondents that can faithfully represent the population (in our case
the teenagers). The choice of this method is mainly justified by the fact that it is the
most appropriate for practical reasons of accessibility and low cost.
The study aims to test the influence of the teenager as Internet expert on the family’s
online purchase decision. Our goal is not fundamentally to generalize the results. We
chose to administer the questionnaire to the sample composed of high school students
(first and second cycle). According to Chen and Alan (2003), the students use the
Internet and prepare themselves to become online buyers. Rita and Henriette (2004)
chose a sample of high school students to study the pattern of online consumer
purchasing. They confirmed the findings of Chen and Alan (2003) that the choice of
students is justified by the fact that students have free access to Internet and can
subsequently use it to communicate and initiate business transactions.