The intensity level at which people can successfully detect the presence of a stimulus 50% of the times it is present is called the:
A)difference threshold for the stimulus
B)absolute threshold for the stimulus
C)perceptual threshold for the stimulus
D)adaptation threshold for the stimulus

Question

Quizplus · Accepted Answer

The absolute threshold for a stimulus is the minimum intensity level at which people can detect the presence of a stimulus 50% of the time it is present. This means that the stimulus is just noticeable at this level of intensity, and any lower intensity would render it undetectable. Therefore, the correct answer is B, the absolute threshold for the stimulus. The other options, such as the difference threshold, perceptual threshold, and adaptation threshold, refer to different aspects of sensory perception but not to the intensity level at which a stimulus can be detected.

The Intensity Level at Which People Can Successfully Detect the Presence