The Placebo Effect


One of the things that should be taken into account in the evaluation of audio equipment, tweaks, etc is the Placebo Effect.

In the medical world, Placebos (open label or concealed) appear to mostly work on subjective symptoms, such as pain. They don’t work on an objective symptom — something a doctor could see or diagnose, such as a fracture on a bone. Placebos don’t shrink tumors, they don’t change your diabetes, and they’re not going to actually lower your blood pressure for more than 15 minutes, Basically, placebos appear to work on things that pass through the brain’s perceptual systems — where they can prompt the release of opioids and other endorphins (chemicals that reduce pain) in the brain. Bottom line, placebos can result in perceived improvement even where no actual improvement exists.

The same applies to our hobby. Probably too often, we sense improvement in SQ because of the Placebo Effect. Our money spent, hardware bias's, effective marketing, or being influenced by the experience of others (regardless if true), often have us believe that we have obtained improvements that don't really exist. This is not necessarily a bad thing because a perceived improvement, whether real or imagined is still an improvement to the listener. This may explain part of why certain "improvements" can't be measured. 

J.Chip
128x128jchiappinelli
as a retired physician, I spent many years experiencing patients with subjective complaints that achieved relief with placebo.  The phenomena is real, regardless how one wishes to explain it.  AND if it gave the patient relief and, at the same time "did no harm", that is a positive result....in audio, if it pleases the listener, that is a positive result...one must decide if the money spent is "doing harm" , or not.....
This is a really interesting thread.  As a Practicing Physician, I can definitely state that the Placebo effect is real.  As an audiophile, I can say that in my case, I have experienced it.  I have definitely had expectation bias, wanting to hear something that is a revelation, and then over time realizing that while the change made made things sound different, but not necessarily better.  Perhaps the term Placebo Effect isn’t totally correct, because there has been an audible change to my ears, but the expectation bias confounds how I react to that change
Seems to me that we are confusing two separate things. As described above by mahler123, as concerns audio, if the perceived change is real it is obviously not due to Placebo Effect. Whether the change is an improvement or not is a subjective call and is a separate issue.

On a more mundane level, it seems to me that some listeners are simply reluctant to accept the simple fact that some are simply blessed with hearing that is more acute than that of others; or, have developed their hearing acuity by way of training or experience more so than others.
I believe that you eventually get to a place where there is no significant improvement unless you spend 10’s of thousands of dollars. You need to be real with yourself and ask is a 1% improvement really worth another several thousand dollar outlay, or is what you already have sufficient. I have removed myself from the merry go round and now just focus on attaining more lp’s, cd’s, and cassettes. I've spent at least 20k on my system, as much as a new vehicle. Some would say I am nuts, but some here have spent a lot more. 
mahler has it correct:
 "I have definitely had expectation bias, wanting to hear something that is a revelation, and then over time realizing that while the change made made things sound different, but not necessarily better."

-That is exactly what tweeks, cables, etc. do. Then, as in evaluating any component in your system, YOU decide, over time, if it suits your needs and to your liking. I don't think the placebo effect is a correct description because we do the same type of evaluations with all the audio gear, amps, preamps, (tubes - solid state), sources and speakers.