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psychophysics |
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psychophysicsBranch of psychology concerned with the effect of physical stimuli (such as sound waves) on mental processes. Psychophysics was established by Gustav Theodor Fechner in the mid-19th century, and since then its central inquiry has remained the quantitative relation between stimulus and sensation. A key tenet has been Weber's law. Psychophysical methods are used today in vision research and audiology, psychological testing, and commercial product comparisons (e.g., tobacco, perfume, and liquor). |
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The advantage of SDT methods over classical psychophysical methods is that they provide an estimate of the subject's ability to discriminate between stimuli, which is independent of the criterion, or the subject's bias to respond in a particular way, which the subject adopts. |
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Psychophysical methods
