The Truth About Power Cords and there "Real" Price to Performance

atdavid

... a blind test is not a sighted test ...

Agreed! They are two different things. In a true blind test, neither those conducting the test nor the subject of the test know exactly what is under evaluation at any given moment.

But if anyone involved in the test actually knows what is under evaluation at any given time - and they know this because they can "see" - then it isn’t a true proper blinded test:

blind/blīnd/adjective ...

1. 1. unable to see because of injury, disease, or a congenital condition."he was blind in one eye" ... Opposite: sighted ...
   
   
2. 2. lacking perception, awareness, or discernment.

Anyone who has any experience running tests with subjective results has used single blind testing ...

I don’t know whether that claim is true or not, but you make a fair point. The results of a "single blind" test are subjective, not objective, because the test doesn’t even try to control for all the known variables. That doesn’t mean the test has no value, so there’s no need for you to feel such hurt over this. But its value is limited to about the same extent as other sighted tests. Perhaps that limitation is not nearly so severe as some believe.

It’s confounding to me why you refuse to acknowledge the difference between "blind" and "sighted." Perhaps you simply seek to continue argumentation.

So it appears there is no way to set up a "scientific" test test that will make everyone happy audiophiles will be debating this for the rest of time.............
But what about doing something simpler? Just prove to yourself which cable is best for your system (blinded). Have a friend swap the cables for you and you listen and decide what the differences are. If there is an audible change it should be obvious without you having to look at your friends face to try and cheat and get a clue. It doesn’t even have to give a statistically significant outcome. If you tend to like one over the other that is the cable to use.

This test would be best if you have some different demo cables to pick from. After you already spent big bucks on a cable it will be more risky. Its not fun to find out you like a cheaper cable but like everyone said cables are system dependent. There is no reason a cheaper cable might not sound better. Also, this test will not prove anything to others, It will just give you more confidence that you picked the best cable for your system. Regardless of cost, how fancy and thick it looks, or biased audio reviews.

delkal

... it appears there is no way to set up a "scientific" test test that will make everyone happy ...

I don’t think that’s true. The protocols for a controlled, scientific, double-blind listening test have already been established. They can be cumbersome, so some seek a shortcut to the protocols, which is fine, of course. The only issue is when they also proclaim that their compromised test is as valid as a properly controlled test. That’s a truly odd claim, but there are only one or two people here asserting it.

What is subject to debate is the actual value of a proper controlled, scientific, double-blind listening test. That debate will continue as long as audiophiles inhabit the planet.

... what about doing something simpler? Just prove to yourself which cable is best for your system (blinded). Have a friend swap the cables for you and you listen and decide ... If you tend to like one over the other that is the cable to use.

I think that’s exactly what some audiophiles do. Some make it even simpler and omit the blind cable swap altogether.

Unfortunately delkal, people are arguing from a position lacking knowledge and I have to wonder what agenda they have?

Sighted Test: The subjective evaluator 100% knows that they are evaluating.

Single Blind Test: (This is a blind test). The subjective evaluator has no direct knowledge of what is being tested. The tester may accidentally or on purpose give clues to the subjective evaluator. This test method is used where the potential for bias is low, or the expectation of bias is low by those viewing the results. This is used day in / day out in scientific testing as most of the time, there is no desire to introduce bias and the results are not life/money critical. For that reason, having your friend administer the test for cables, would be suitable assuming they have no skin in the game for the outcome. Similarly, having a supplier administer it would be a no-no as the potential for bias is too high, and the results would be questioned due to that potential for bias.

Double Blind: Neither the subjective evaluator nor the person administering the test knows what is being tested, therefore there is no way for clues to be passed to the subjective evaluator. The almost gold standard of subjective evaluation.

Triple Blind: In addition to the double blind, all test data is coded so that results cannot be linked to a particular item under test during the data processing and analysis stage.

... and again, if you are only proving or disproving a single narrow claim, you don't need multiple subjects nor a complex protocol.

I hate to judge too harshly but it seems a lot easier to satisfy the Naysayers as to what constitutes a “scientifically controlled test.” The reason I say that is because, by their own words, naysayers almost always have the least firm grip on what all the variables are. Not to mention anyone with bad intent can make the test impossible to pass. Thus, Naysayers are LEAST able to control all the variables. Make sense?