If your roommate slowly and carefully turns up the volume on the stereo until you can determine "now it's louder than it was before," which of the following represents how much the volume increased

Question

Quizplus · Accepted Answer

A just noticeable difference (JND) is the smallest amount of change in a stimulus that a person can detect. In this scenario, the roommate is slowly and carefully turning up the volume until the other person can determine that it's louder than before. This suggests that the increase in volume is just enough to be noticeable, indicating a JND.

If Your Roommate Slowly and Carefully Turns Up the Volume