Question

________ is a basic law of psychophysics stating that a just noticeable difference is a constant proportion to the intensity of an initial stimulus.

Answer 1

Weber's Law

Step-by-step explanation:

The law states that the smallest discernible change in the magnitude of a stimulus is proportional to the magnitude of the stimulus.

For example, if we hold a 100-gram ball in our hand, we may not be able to distinguish it from another one of 105 grams, but one of 110 grams. In this case, the threshold to discern the change in mass is 10 grams