The principle of _____ helps explain why a person with only one visual pigment can see all wavelengths as the same color (i.e., shade of gray) if light intensity is adjusted appropriately.
A) intensity
B) adjustments
C) univariance
D) unitization

Question

Quizplus · Accepted Answer

The principle of univariance states that a single type of receptor (e.g. cone cell in the eye) cannot differentiate between different wavelengths of light if light intensity is adjusted appropriately. Therefore, if a person has only one type of visual pigment, they will perceive all wavelengths as the same shade of gray, as the receptor cannot distinguish between different wavelengths.

The Principle of _____ Helps Explain Why a Person with Only