difference threshold

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In psychophysics, the smallest detectable change in a stimulus or difference between two stimuli that can be reliably detected, often defined as the difference for which the percentage of correct discriminations is 75 per cent, though other percentages are sometimes used. Also called the difference limen (DL), discrimination threshold, or just noticeable difference (jnd). See also acuity, ABX paradigm, Bunsen-Roscoe law, differential acuity, discrimination function, Fullerton-Cattell law, Piper's law, Ricco's law, Weber fraction, Weber's law. Compare absolute threshold.

Subjects: Psychology.

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