Fifty percent of the time,a person with normal hearing will be able to detect a clock's ticking 20 feet away when all is quiet.This illustrates the approximate _____ for hearing.
A)just noticeable difference
B)relative threshold
C)psychophysical boundary
D)absolute threshold

Question

Quizplus · Accepted Answer

The question is asking for the "approximate threshold for hearing." The definition of threshold is the level of intensity or strength that is required for a person to detect a stimulus. In this case, the stimulus is the sound of a ticking clock. The fact that a person with normal hearing can detect the sound 50% of the time at a distance of 20 feet suggests that there is a certain level of sound intensity that is needed for the person to detect it. This level is known as the absolute threshold. Therefore, the correct answer is D.

Fifty Percent of the Time,a Person with Normal Hearing Will