The experimental lab of the
SFB 504 offers the opportunity both to do external internet
experiments, as well as internal ones.
External Internet Experiment
Participants log into the experiment from the outside world.
It is often impossible to reward them, to control them,
to check the validity of their answers.
However you have a huge subject pool
Internal Internet Experiment
Internet facilities, like WWW-broswers and servers, are used
within the experimental laboratory to conduct
an experiment. Thus, control and reward of subjects is
possible