Maybe I should have posted this in the Automated Trading thread but considering this originally being about human perception... I'm posting it in psychology. Interesting stuff... starting with: http://en.wikipedia.org/wiki/Weber-Fechner_law *The Reference section in Wiki is where the good stuff are at. Of course, I'm a systematic trader and I wouldn't be posting this if I didn't run any viable tests and came across a significant results... Anyways, good stuff.
I looked at the title and the two posters. As far as I am concerned we are on the same thread. I'll delete my post. There you go.