garym wrote:
> Expectation bias works both ways. And expectation bias is but one of
> many cognitive heuristics and biases known to exist, and tested
> extensively in the psychology literature (primacy effect, recency
> effect, and many others). To your point if someone "thinks there is no
> audible difference" that in itself could be an expectation bias ("I
> expect no differences"). The beauty of the ABX test (or any number of
> other double-blind test setups) is that it removes the expectation bias
> whatever the direction of the expectation.
>
> edit: but certainly from a practical point of view, such a test is not
> very useful for subjects who report no difference in a sighted test in
> the context we're discussing. However, should I be conducting an
> experiment I wished to publish in a refereed journal, I would be
> expected to test all subjects with a double-blind method, even if I
> screened all subjects first and sorted them into initial groups of those
> that heard a sighted difference and those that did not hear a sighted
> difference.
Agreed and I mean it in our hifi context.
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