On 10/07/2015 01:36 PM, DerbyDad03 wrote:
1 - Yes, the warm up may have altered the results to some extent, but
not "utterly". Even if some of the drivers stopped, I'm confident in
saying that it wouldn't be enough to wipe out the entire 20% of
improved efficiency. There is no also guarantee that every of those
drivers have encountered - or properly deal with - 4 way stops.

If you design an experiment where you train the Group B participants
before hand and ignore Group A, you're not proving much other than
people perform better in an environment that they're familiar with.

Take 5 rats and train them on a maze, then introduce 5 rats to a maze of
equal complexity that they haven't seen before. Who gets the cheese?