The History and Fundamentals of Subliminal Messages
Conceptual Roots of Subliminal Manipulation
Subliminal messages are fundamentally rooted in the concept of mind control, defined by Key in "The Age of Manipulation" as perception occurring below an individual’s threshold of awareness. This practice traces back to at least the century B.C., where the early Greeks utilized the science of rhetoric to influence behavior by embedding persuasive data within language. The core objective of these techniques is to guide individuals toward actions or beliefs they would not ordinarily adopt through the strategic placement of information fragments, words, or sentences.
Auditory Subliminal Messaging in the 1920s
Historical evidence of auditory subliminal messaging includes the BBC's efforts in the 1920s to rehabilitate the public image of radio, which was then feared as "the voice of the devil." To alter this national sentiment, the BBC utilized backward masking within its jingles. An example of this is a jingle that, when played in reverse, revealed the phrase "this is not a noose, no really its not." This technique, discussed in "Subliminal Messages and Backmasking," aimed to use the subconscious to persuade the nation to respond positively to the new technology.
Investigative Research and the 1957 Vicary Study
While research on the subject dates back to the late 1800s, public concern regarding subliminal manipulation intensified in 1957 due to the work of marketing researcher James Vicary. Vicary claimed that by flashing the phrases "Drink Coca-Cola" and "Eat popcorn" for a duration of of a second during a movie, he could dramatically influence consumer behavior. His statistical data reported an increase in popcorn sales by and Coca-Cola sales by , leading to ongoing scrutiny regarding the effectiveness of subliminal perception in processing information.