The difference threshold is defined as the degree of change in a stimulus level that is required in order for a person to detect a change __________ of the time.
A) 25 percent
B) 75 percent
C) 50 percent
D) 100 percent

Question

Quizplus · Accepted Answer

The difference threshold, also known as the just noticeable difference (JND), refers to the smallest amount of change in a stimulus that can be detected by a person 50 percent of the time. In other words, if a person can detect a change in a stimulus half the time, then that change is at the difference threshold.

The Difference Threshold Is Defined as the Degree of Change