In the equation S = k log I, the S refers to __________.
A) the psychological or subjective magnitude of a stimulus
B) the physical intensity of the stimulus
C) the constant whose value depends on the value of the Weber fraction
D) none of the above

Question

Quizplus · Accepted Answer

In the equation S = k log I, S refers to the psychological or subjective magnitude of a stimulus. This equation is known as the Stevens' Power Law and is used to relate the physical intensity of a stimulus (I) to the perceived intensity or sensation (S) it produces. The constant k depends on the sensory modality and the specific task used to measure the subjective magnitude of the stimulus. The Weber Fraction, on the other hand, is a different constant that relates the just noticeable difference (JND) to the magnitude of the stimulus.

In the Equation S = K Log I, the S