The absolute threshold is also known as the just noticeable difference, or jnd.

Name: The absolute threshold is also known as the just noticeable difference, or jnd.
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The absolute threshold refers to the minimum level of intensity or strength of a stimulus required to be detectable by a person's senses. The just noticeable difference (jnd) refers to the smallest difference in the intensity or quality of a stimulus that can be detected by a person. They are related concepts but not the same thing.

The Absolute Threshold Is Also Known as the Just Noticeable