"Clyde Slick" wrote in message


Fist of all,

Art gratuiously introduces a OT discussion of something
involving a fist. What might that be?

For the purposes of my purchase decisions,
any test results derived from other subjects
are completely irrelevant to my decision.

This only makes sense if Art's hearing or Art's listening
environment is so atypical that no other person's hearing or
listening environment would be relevant. IOW, it suggests
that Art's hearing has become vastly degraded due to his age
and personal activities, and that his home audio system is
full of masking noises and distortions.

I could not care less what the unknown masses do or do not
hear.

Note that Art can't comprehend of any other individual
having the same serious hearing problems that he has.

Now, as far as DBT and its removal of expectation effects,
for the purposes of audio purchase decisions, a
test subject would tend to have fairly strong
preconceptions
about whether there might be inherent differences
between two items.

Agreed - given that retail outlets and manufacturer's have
strong economic incentives to give people favorable
preconceptions about the products they sell.

AS far as manufacturer's using DBT in support of
parts or decsign decisions, the test subjets
are likely to have minimal preconcptions
over whatever is being tested.

At last Art correctly perceives that one of the benefits of
DBTs is that they can help identify and reduce or elminate
the effects of preconceptions.