Author Question: Which of the following theories proposed that there are three types of color receptors, but they are ... (Read 28 times)

sarasara · **on:** Jun 19, 2018

Which of the following theories proposed that there are three types of color receptors, but they are not sensitive only to red, green, and blue?

A) The opponent-process theory
B) The signal-detection theory
C) The trichromatic theory
D) The place theory

Question 2

According to Freud, the ego is guided by the _____.

A) moral principle
B) reality principle
C) pleasure principle
D) reasoning principle