Final answer:
The study of color vision and the interference of fast and automatic processing of color names with other cognitive processes.
Step-by-step explanation:
The subject of this question is Psychology. Specifically, it relates to the study of color vision and how the fast and automatic processing of the color name of a word interferes with other cognitive processes. This concept can be explained through the trichromatic theory of color vision, as well as the opponent-process theory. The trichromatic theory suggests that color is coded through three types of cone receptors in the eye, while the opponent-process theory proposes that color is coded in opponent pairs: black-white, yellow-blue, and green-red.