Answer:
Suppose we did a demonstration in class with a backpack, tennis balls and two student assistants. As tennis balls were added the student perceived a change in weight of the backpack. This demonstration would provide an example of the difference Threshold which is the minimum intensity of sensory stimulation needs to change before the sensation is detected 50 percent of the time.
Explanation:
In this exercise, you have to complete the paragraph with correct concept. The text shows an example of the difference Threshold, also called just-noticeable difference or JND, which is part of experimental psychology.