Which of the following would be an effective way to determine a just noticeable difference (JND)?
A) Piling five-pound bean bags on your friend's foot until he reaches his pain threshold
B) Turning a radio on and off repeatedly until your roommate stops noticing it
C) Lifting the lid from a pot of cooking stew and inhaling deeply
D) Reducing the intensity of a light beam against a wall until you can no longer detect it

Question

Quizplus · Accepted Answer

The just noticeable difference (JND) is the smallest difference between two stimuli that can be detected by a person. To determine a JND for visual stimuli, reducing the intensity of a light beam against a wall until it can no longer be detected would be an effective way to measure this difference. A, B, and C do not relate to measuring a JND.

Which of the Following Would Be an Effective Way to Determine