PSYA01H3 Lecture Notes - Lecture 10: Response Bias, Detection Theory, Subliminal Stimuli
Document Summary
It"s attempt to be scientifically rigorous - psychophysics weber and fechner. Just noticeable differences the weights, how much heavier did it have to be so you could detect the difference lights, how much brighter does it have to be so you can detect the different jnd. Jnd eye doctors use this to see when you can"t notice a difference because you don"t want to train your eye to get more magnification. Threshold is an architectural term holds an opening open. Weber"s technique was all about finding difference thresholds the point. How powerful does a stimulus have to be for us to detect its difference . Absolute thresholds not being able to detect that it exists and then being. Can the brain detect information that our conscious mind is unaware of. We need to detect when our conscious mind becomes aware of information. Advertisers use subliminal perception all of the time to sort of be guessing.
