Ernst Weber provided a formulation that is used to determine the ______________.
A)varying fraction of change that occurs before just noticeable differences in the same sensory system can be detected
B)smallest detectable stimulus between two stimuli of different sensory systems
C)largest detectable difference between two stimuli that can occur before the change becomes undetectable
D)constant fraction of change that must occur if a difference from the original stimulus is to be detected

Question

Quizplus · Accepted Answer

Ernst Weber's formulation is known as Weber's law, which states that the just noticeable difference between two stimuli is proportional to the magnitude of the stimuli. Specifically, Weber's law suggests that a constant fraction of change must occur in a stimulus if a difference from the original stimulus is to be detected. Therefore, the correct answer is D, which describes the constant fraction of change that must occur for a difference to be detected.

Ernst Weber Provided a Formulation That Is Used to Determine