In constant stimulus method, will using feedback and the stimulus interval affect psychometric function?
And another question is, is feedback necessary in pre-test and post-test of perceptual learning?
Thanks!
yes,feedback may be as an internal reward information, playing a important role in visual perceptual learning.
You can make reference to M Fahle and Zhong-Lin Lu's works
The role of feedback in learning a vernier discrimination task
http://www.sciencedirect.com/science/article/pii/S0042698997000436
Long-term learning in vernier acuity: Effects of stimulus orientation, range and of feedback
http://www.sciencedirect.com/science/article/pii/004269899390094D
Perceptual learning without feedback in non-stationary contexts: Data and model
http://www.sciencedirect.com/science/article/pii/S004269890600157X
By the way, are Prof.Cong Yu's student?
Definitely! I have once performed a pilot on inter-stimulus-response intervals in a rod-and-frame task. The rod-and-frame were always shown for 30ms but the longer you wait, the steeper the psychometric function gets, hence the subject is more certain!
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