jnd

(thing) by scibtag (1.5 y) Tue May 22 2001 at 5:34:35
In psychology, acronym for just noticeable difference. The unit used when comparing difference thresholds. Represents how much the stimulus must change before you are able to notice it changed. In any given sensory one jnd is equal to the difference threshold.
Used in Fechner's Law and Weber's Law.
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