Which of the following pairs of stimuli will result in the greatest peak-shift phenomenon?
A)S+ = bright red light: S- = no light
B)S+ = bright red light: S- = bright yellow light
C)S+ = bright red light: S- = tone
D)S+ = bright red light: S- = bright orange light

Question

Quizplus · Accepted Answer

The peak-shift phenomenon occurs when the organism responds more strongly to a stimulus that is further removed from the S- than it does to the S+ itself. In this case, the S+ is a bright red light and the S- is a bright orange light. Since these two colors are relatively close in the spectrum, the peak-shift phenomenon will be the strongest.

Which of the Following Pairs of Stimuli Will Result in the Greatest