

Knight Dunlap concluded that the shadows subliminally influenced how the subjects judged the lengths of the lines. This illusion features two lines bearing pointed arrows at either end that create an illusion showing different lengths. After this, an American professor of psychology, Knight Dunlap, conducted an experiment where he flashed “imperceptible shadows” to participants while showing them a Muller-Lyer illusion. The book describes the basic tenets of subliminal messages. Scripture published the book The New Psychology (Aff-link). The concept of subliminal messages dates back to the beginning of the 20th century, when E.W.


Numerous researchers have investigated the effect of subliminal stimuli and have attempted to prove the possibilities for application in therapeutic and academic domains. A subliminal stimulus is contrary to a supraliminal stimulus, which is a visual or auditory stimulus that humans can perceive.
