Discuss how the "just noticeable difference" and Weber's law help explain how we detect changes in stimulation.

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The Answer is The answer should indicate that the smallest change in stimulation that a person can detect is the just noticeable difference. It is not a fixed quantity; instead, it depends on how intense the stimuli being measured are and on the particular sense being measured. It can be calculated for each sense and is roughly proportional to the magnitude of the standard stimulus. Weber's law states that the just noticeable difference of a stimulus is a constant proportion despite variations in intensity. For example, to notice a change in weight, the change must be about 2 to 3 percent. It is easy to notice the difference between 1 and 2 pounds, but impossible to notice the difference between 100 and 101 pounds.

Discuss How the "Just Noticeable Difference" and Weber's Law Help