The principle that the just noticeable difference of any given sense is a constant fraction or proportion of the stimulus being judged is called ________.
A) the phi phenomenon
B) the doctrine of specific nerve energies
C) Weber's law
D) the opponent-process principle

Question

Quizplus · Accepted Answer

The principle described in the question is Weber's law. It states that the just noticeable difference (JND) between two stimuli is a constant proportion of the intensity or magnitude of the stimuli, rather than a constant amount. This means that as the magnitude of a stimulus increases, the JND also increases proportionally. Weber's law applies to all senses, including vision, hearing, and touch.

The Principle That the Just Noticeable Difference of Any Given