Hi,
The best reference group I can think of would be Wikipedia users. Ideally,
the best and cleanest way to get that sample is to publish the link on Wikipedia itself (e.g. on every 10'000th page or so). Do you see any
chance
to make that happen?
Please explain what you mean. Every 10,000th user page? A link to the entire survey? How would the link being on a page distinguish contributors from non-contributors?
my idea was to display the link on every 10'000th article, not user pages, because ordinary users probably don't look much on user pages or discussion pages. The inviting text should make it clear that we are primarily conducting a survey of Wikipedia users (as opposed to contributors). This was just an idea, though...
If you're looking for a way to split visitors into two identical
groups, you could separate out anon IPs (mainly readers, not contributors) that end in odd numbers from those that end in even numbers...
Yes, displaying the link only to anon IPs seems a very good idea.
Best wishes,
Joachim
-- Joachim Schroer, Dipl.-Psych. University of Wuerzburg Department of Psychology II, Industrial and Organizational Psychology Roentgenring 10 97070 Wuerzburg Germany
Phone: +49 931 31 6062 Fax: +49 931 31 6063 http://www.psychologie.uni-wuerzburg.de/ao/staff/schroer.php schroer@psychologie.uni-wuerzurg.de