+The **Just Noticeable Difference** (JND), or difference threshold, is the smallest detectable change between two stimuli. It marks the minimum shift in attributes an individual can reliably perceive, a key concept in [Psychophysics](/wiki/psychophysics) and often described by [Weber's Law](/wiki/webers_law).
+## See also
+- [Absolute threshold](/wiki/absolute_threshold)
+- [Sensory adaptation](/wiki/sensory_adaptation)
+- [Fechner's Law](/wiki/fechners_law)
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