Prashanth is participating in a psychology experiment in which he is asked to gradually shrink the image of a square on his computer screen until he can see that it is smaller than a second square on the screen.Prashanth is trying to create a _____ in order to allow measurement of a _____.
A) just noticeable difference; absolute threshold
B) psychophysical difference; absolute threshold
C) just noticeable difference; difference threshold
D) psychophysical difference; difference threshold

Question

Quizplus · Accepted Answer

Prashanth is trying to create a just noticeable difference (JND) between the two squares, in order to allow measurement of a difference threshold (DT), which is the smallest change in stimulation that can be detected. Therefore, the correct options for the first and second terms in the answer choices are JND and DT, respectively. Option A is incorrect because it mentions absolute threshold, which refers to the minimum amount of stimulation needed to detect a sensation. Option B is incorrect because it uses the term psychophysical difference, which is not a commonly used term in the field. Option D is incorrect because it uses the term psychophysical difference and does not match the second term in the answer choices with a commonly used term (i.e., DT).

Prashanth Is Participating in a Psychology Experiment in Which He