the child was the same in situations where the parents
were present, as in situations where the parents were
absent, implying that the concern of parents that they
cannot influence drinking behavior because they cannot
control the child all the time may be unnecessary.
The goal of the current article is to give a detailed description
of the development and components of the
intervention, as well as a protocol for the two-arm
Cluster Randomized Controlled Trial (CRCT) to test
the intervention’s effectiveness. Based on the focus group
study [23] and the Delphi study (Jander, et al. submitted
for publication) we decided to develop a Web-based
game for adolescents, in which we embedded computertailored
feedback on behavior and motivational determinants.
A game might be an attractive tool to keep
adolescents motivated [26] and offer some degree of
interaction, as recommended by the experts, and thus
reduce drop-out. For the parents we designed a website on
which they had the opportunity to get computer-tailored
feedback on communication and setting rules concerning
alcohol use.