[Arny Krueger]

"Andy C" wrote in message


Two identical CD players and what else? This guy is
being very vague. I guess he is just addressing the
typical WSJ reader who isn't familiar with or does not
care about this stuff. There just isn't enough info
provided to evaluate whether the test setup is valid or
not.

Andy your analysis is good, but you don't have to look that hard to see how
the alleged test is invalid. It was single blind when it could have been
double blind with very little additional expense in terms of time or money.
Single blind tests don't control as many important relevant variables as
double blind tests - the test was too simple and shoddily done to be worth
much analysis.