Weber's law says that the amount of change in a stimulus that is necessary to produce a just noticeable difference ______.
A) is constant for all senses
B) varies according to the age of the subject
C) depends on the intensity at which the stimulus was first presented
D) is inversely related to the duration of the stimulus

Question

Quizplus · Accepted Answer

Weber's law states that the size of the just noticeable difference (i.e., the minimum amount of change needed for a person to detect a difference) is a constant proportion of the original stimulus level. This means that the amount of change required to notice a difference depends on the initial intensity of the stimulus, not on its duration, the age of the subject, or being a constant for all senses.

Weber's Law Says That the Amount of Change in a Stimulus