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
jchiappinelli

Showing 9 responses by djones51

then the first thing they will pull out is a modern electronic tuning device.
Absolutely, I have a couple electronic tuners, one for my guitar one for my dulcimer. 
We all know audio reproduction is outside known physics and human audibility limits. To think silly things like placebo effect or confirmation bias could remotely apply to humans in their den of audio tweaks is outlandish not to mention those crazy ABX or DB tests being relevant for anything other than testing mayonnaise.
Don't expect nothing but jumping through hoops trying to deny the obvious on this forum J. Chip.
I would agree that placebo effect is an actual physical reaction.  The problem I have is when it's denied placebo effect happens in audio perception. 
If placebo effect exist in audio, then it works both ways. If you strongly believe that cables have no effect on sound then you won't hear the difference in double blind testing - negative placebo effect.
Yes, of course I'd never say otherwise. I understand bias affects us all to deny it is silly. 
Uh, that was a very nice rant but this isn't about measurements and observations are often deceiving. 
Tell the scientists the brain measurements mean nothing, not me,  I didn't conduct the experiments. The main point was the ability to image the brain in order to understand the regions associated with the phenomenon. Without the instruments, measurements and science there would be no article. 
Most of it was a rant. The rest wasn't really all that new but more information on the cocktail party problem. I did find the article interesting mainly because the way they moved a step closer was a focus on brain MEASUREMENTS  from fMRIs where speech is localized in the brain. What that has to do with the placebo effect I have no idea.
So: Yes, some reported improvements from cables, fuses, vibration dampeners and such are likely placebo effects
Which can be verified.


And yes, some reported improvements are likely truly heard and experienced as real, permanent change by the listener.


Which could also be verified using the same procedure used to verify the former.

To argue we haven't reached the limits of scientific discovery is far fetched in the context of the placebo effect. We aren't measuring the device but the perceived human response.