Carol was listening to her new CD with the stereo's volume set twice as high as usual. Her mother yelled at her to turn the volume down, so Carol gave the volume control her usual half turn. Her mother could not tell that she had turned the volume down at all. Carol will have to decrease the volume even more than usual to attain

Question

Quizplus · Accepted Answer

The just-noticeable difference (JND) is the minimum change in a stimulus that can be detected. Carol needs to decrease the volume more than usual to reach the JND, so her mother can notice the change.

Carol Was Listening to Her New CD with the Stereo's