"Subliminal perception occurs whenever stimuli presented below the threshold or limen for awareness are found to influence thoughts, feelings, or actions. The term subliminal perception was originally used to describe situations in which weak stimuli were perceived without awareness. In recent years, the term has been applied more generally to describe any situation in which unnoticed stimuli are perceived" (Kazdin (Ed.), 2010.)
The concept of subliminal persuasion is extremely relevant now with the emerging omnipresence of advertising in all possible aspects of our lives because it supposes that every day we are susceptible to the marketers' influence without even realizing that.
The reseachers continue to argue whether subliminal advertising works.
Here is a video by Derren Brown who is a 'psychological illusionist' as called by the press. He conducts an experiment making two designers create an ad for an unknown topic with no preparation for 30 minutes. Before that on their taxi trip to the place he makes sure they subliminally see certain images that they will later incorporate into their advertising artwork during the experiment.
(this link cannot be embedded due to author's restrictions, please click)
Some other methods of subliminal persuasion may include the following:1. Smell. In Disney world they use vanilla to warm up the pre-made cookies that have actually been baked somewhere else in order to attract the customers who are tempted by the smell.
2. Sound. You might not be realizing how lyrics of the popular song actually predetermine your choice of brands or certain attitudes. Also (though it is arguable) there is a common belief that some stores uses sounds at unrecognizable for a human ear levels to prevent shoplifting (Subliminal Persuasion, n.d.).
Backmasking is another subliminal sound technique, and its proponents argue that argue "the effects of listening to backward messages are manifested in an unconscious manner on the listeners' subsequent behavior" (Vokey and Don Read, 1985).
3. Sight. Many images contain other images that you might not recognize at the first sight, but you can see them if you look more closely. Usually they are differently placed, upside down, or just subtle/commonplace, so a human eye doesn't see them immediately. Some researchers (Key, 1976) argue that when advertisers embed word sex into the copy, it increases recognition.
This video is showing examples of subliminal messages in modern ads, and it is really scary to think embedded images, symbols and messages can autonomically have effect on us.
Though further research hasn't proved that statement true. Actually, Vokey and Don Read (1985) after a series of experiments with the word sex embedded into the commercial space does not increase brand recall. Their study also proved that there is no way to force people to actually "hear" anything in backward speech (Vokey and Don Read, 1985). But it still a question of further research to find out whether any other types of subliminal work really influence people's behavior.
REFERENCES
Kazdin, A.E. (Ed.). (2000). Encyclopedia of Psychology (Vol. 7). New York: Oxford University Press.
Key, B. W. (1976). Media sexploitation. Englewood Cliffs, NJ: Prentice-Hall.
Goodman, M. (n.d.) Subliminal Persuasion In Mass media and society. Retrieved form http://130.18.140.19/mmsoc/subliminal/
Vokey, R.J., & Don Read, J. Subliminal messages: Between the devil and the media. Psychology in Action, November 1985, 1231-1239.









