Carol is listening to her new CD with the stereo's volume set twice as high as usual.Her mother yells at her to turn the volume down,so Carol gives the volume control her usual half turn.Her mother cannot tell that she had turned the volume down at all.Carol will have to decrease the volume even more than usual to attain a(n)____.

Question

Quizplus · Accepted Answer

The just-noticeable difference (JND) refers to the minimum amount of change in a stimulus that can be detected by a person. In this scenario, Carol's mother couldn't tell that the volume had been turned down after Carol gave it her usual half turn. Therefore, Carol will have to further decrease the volume to reach a point where it is noticeable to her mother, indicating a change that is greater than the just-noticeable difference.

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