What is another term for just noticeable difference?

The term "just noticeable difference" (often abbreviated as JND) refers to the minimum amount by which a stimulus must be changed in order for a difference to be noticed. This concept is fundamental in the field of psychophysics, which explores the relationships between physical stimuli and the sensations and perceptions they produce.

The correct answer focuses on the idea that the just noticeable difference is specifically about the smallest change in a stimulus that can be detected by an observer. This means that if a stimulus is altered by a certain amount, the JND is the minimal amount of change required for that alteration to be perceived by the senses. This is tied to the concept of sensory thresholds and can vary across different types of stimuli and contexts.

In comparison, other options do not accurately capture the essence of the just noticeable difference. For instance, referring to the "smallest visible difference" does not adequately capture the broad range of sensory modalities involved in JND, as it is not limited solely to visual stimuli. The notion of the "maximum perceptible difference" suggests a limit rather than a minimum detectable change, which is not aligned with the definition of JND. The term "absolute difference threshold" implies a fixed level of difference, whereas JND is relative and depends