The just noticeable difference (JND)is the:
A)decreasing sensitivity to a stimulus over time.
B)minimal change in a stimulus that can just barely be detected.
C)minimal intensity needed to just barely detect a stimulus.
D)ability to detect a stimulus in the presence of noise.

Question

Quizplus · Accepted Answer

The just noticeable difference (JND) refers to the smallest detectable difference between two stimuli that can be perceived by an observer. It is the minimal change in a stimulus that can just barely be detected, making option B the correct choice. Option A refers to the phenomenon of sensory adaptation, in which sensitivity to a stimulus decreases over time. Option C describes the absolute threshold, which is the minimum intensity needed to detect a stimulus. Option D describes the concept of signal detection theory, which refers to an observer's ability to detect a stimulus in the presence of noise.

The Just Noticeable Difference (JND)is The