Hi, luciano33.
When one has a preconceived notion in one's mind about the outcome of something before doing it, they have already made up their mind as to the outcome, and that is what is most likely to occur. As Tom had suspected in advance what he was going to hear, that is what he heard.
That is a decent description of expectation bias, even though I was half kidding and really have no idea why as to he not hearing a difference...
When one has a preconceived notion in one's mind about the outcome of something before doing it, they have already made up their mind as to the outcome, and that is what is most likely to occur. As Tom had suspected in advance what he was going to hear, that is what he heard.
That is a decent description of expectation bias, even though I was half kidding and really have no idea why as to he not hearing a difference...