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," it would be MOST accurate to say the volume increased by a
A) perceivable difference.
B) just noticeable difference.
C) fractional difference.
D) proportional difference.

Question

Quizplus · Accepted Answer

The term "just noticeable difference" (JND) refers to the smallest detectable difference in a sensory input, such as sound volume. In this scenario, the roommate is slowly and carefully turning up the volume, and the point at which the volume becomes noticeably louder is the JND. Therefore, the volume increased by a just noticeable difference.

If Your Roommate Slowly and Carefully Turns Up the Volume