Weber's Law suggests that the just-noticeable difference is a ratio rather than a fixed amount of change in a stimulus.

Name: Weber's Law suggests that the just-noticeable difference is a ratio rather than a fixed amount of change in a stimulus.
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Weber's Law states that the amount of difference needed to notice a change in a stimulus is proportional to the magnitude of the original stimulus. In other words, the just-noticeable difference is a ratio, not a fixed amount.

Weber's Law Suggests That the Just-Noticeable Difference Is a Ratio