A researcher presents two lights of varying brightness to a subject who is asked to respond same or different as he or she compares the intensities. The researcher is seeking the __________ threshold.
A)difference
B)absolute
C)subliminal
D)phosphene

Question

Quizplus · Accepted Answer

The researcher is seeking the difference threshold, which is the minimum difference in stimulation that a person can detect 50 percent of the time. This experiment involves comparing two light intensities to determine if they are the same or different, directly relating to the concept of the difference threshold.

A Researcher Presents Two Lights of Varying Brightness to a Subject