In 1957, which advertising researcher claimed to have boosted Coca-Cola sales by 18.1% and popcorn sales by 57.8% using subliminal messaging in movie theaters?

Test your knowledge about one of the most controversial advertising techniques that caused public outcry and regulatory scrutiny in the 1950s. This technique allegedly influenced consumer behavior without their conscious awareness, leading to significant debates about ethics in marketing that continue to this day. Understanding this historical marketing moment provides insight into how advertising regulation evolved and why certain practices are now prohibited in many countries.

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James Vicary
Edward Bernays
David Ogilvy
Rosser Reeves