A large group of students were tested for their ability to distinguish among different tones. Although tone A and tone B were slightly different, more than half the time the group rated the tones as being the same. The difference between tone A and tone B can be said to be less than:
A) the difference threshold, or just noticeable difference.
B) the absolute threshold, or average absolute threshold.
C) the subliminal threshold.
D) Weber's threshold.

Question

Quizplus · Accepted Answer

The fact that more than half the time the group rated the tones as being the same implies that the difference between tone A and tone B was below the threshold for detecting a difference, also known as the just noticeable difference or difference threshold. Therefore, option A is the best choice.

A Large Group of Students Were Tested for Their Ability