The smallest increase or decrease in the intensity of a stimulus that a person is able to detect at least half of the time is called a(n):
A) just noticeable difference
B) absolute threshold
C) perception
D) retinal disparity

Question

Quizplus · Accepted Answer

A just noticeable difference (JND) is the smallest change in the intensity of a stimulus that a person can detect at least half of the time. It is also known as the difference threshold. The absolute threshold is the minimum amount of stimulation needed to detect a stimulus, and perception refers to the process by which our brain interprets and organizes sensory information. Retinal disparity is the difference in the image projected onto each eye, which is used by the brain to perceive depth and distance.

The Smallest Increase or Decrease in the Intensity of a Stimulus