[TheRealWelshWayne]

Originally Posted by BuckleyDerbyRob

OK, I'll feed the troll...

If you go back 15 years (and if you're that keen, just get on with it yourself), you will end up with meaningless results.
Perhaps you are not familiar with running investigations and statistical analysis, but this proposal would fail at the first stage.
Players, as human beings, react differently to different outside stimuli and so comparing non-matching sets would be a complete waste of time.
In other words a bit like the hotel stay thread.

oooh someone else did psychology at university.