Question

_____ law refers to the fact that the perceived magnitude of a stimulus is equal to its physical intensity raised to a particular constant power.

A)Weber's
B)Fechner's
C)Stevens'
D)Helmoltz's

Answer 1

Stevens' Law dictates that the perceived magnitude of a stimulus is its physical intensity raised to a particular constant power, distinguishing it from Weber's Law.

Step-by-step explanation:

The law being referred to is Stevens' Law, which states that the perceived magnitude of a stimulus is equal to its physical intensity raised to a particular constant power. This is also known as the power law and it is different from Weber's Law, which suggests that the just-noticeable difference in a stimulus is proportional to the magnitude of the original stimulus. Stevens' Law was formulated by psychologist Stanley Smith Stevens in 1957 and is significant in the field of psychophysics, characterizing how the perception of sensory stimuli varies with the actual physical intensity of the stimulus.