Quote Originally Posted by mystic
I see a problem with the experiment. Because your mood may change from one day to the next, your choices can be more a result of variations in how you feel than differences in the cables. This could result in the test having a negative bias. Given the method you will use, I don't know a way around the problem. It should not, however, in itself invalidate positive results.

Good luck!
One might also assume that a mood might have a positive bias.

So you (mystic) hypothesize that a person's mood can affect their ability to distinguish cable differences. I agree, even the time of day might. The fact that these variables can influence what you "hear" is in itself an indictment of uncontrolled listening tests. The advice to "just listen" is really bad advice. One must make some effort to even out all the subjective factors that might be affecting one's perceptions.

Your advice about random selection is excellent.