A researcher presents two lights of varying brightness to a subject who is asked to respond same or different by comparing their intensities.The researcher is seeking the
A)just noticeable difference.
B)absolute threshold.
C)subliminal threshold.
D)minimal threshold.

Question

Quizplus · Accepted Answer

The researcher is seeking the just noticeable difference (JND), which is the smallest detectable difference between two stimuli. In this case, the stimuli are the two lights of varying brightness, and the subject is being asked to compare their intensities and determine if they are the same or different. The JND is important in understanding how we perceive and discriminate between different stimuli.

A Researcher Presents Two Lights of Varying Brightness to a Subject