In 1957, one researcher decided to investigate the power of subliminal advertising. at a movie theater, he inserted single-
frame coca-cola and popcorn ads among the 26 frames projected on the movie screen every second. the appearance of the ads was so rapid that the audience was unaware of seeing them. but the researcher concluded that people's
subconscious minds perceived the ads. his evidence? coca-cola sales increased 18 percent and popcom sales 57.9
percent after showings of the films with subliminal ads.
a. people enjoy drinking coca-cola and eating popcorn while at the movies.
b. subliminal advertising is more effective on movie screens than on tv sets.
c. subliminal advertising appears to influence some people's behavior