The sales-boosting experiment was a publicity stunt
The 1957 story came from market researcher James Vicary, who said a New Jersey movie theater had flashed brief messages urging audiences to buy popcorn and Coca-Cola. He claimed the messages increased sales. But the experiment’s results could not be independently checked, and attempts to reproduce the effect did not confirm his claim.
In 1962, Vicary acknowledged that he had made up the findings. No reliable evidence established that the reported test had happened as described, or that the flashes had produced the sales increase he announced. The episode is therefore remembered less as proof of mind control than as a fabricated finding that caught the public’s imagination.
Why the claim outlasted the evidence
The idea was alarming because it suggested that advertisers could bypass conscious choice: a viewer might not notice a message but still act on it. That fear helped fuel concern about “subliminal” advertising—messages presented below the level of conscious awareness—even though Vicary’s story offered no trustworthy demonstration that such a trick could reliably change buying behavior.
The lasting lesson is a practical one: a dramatic percentage is not evidence by itself. Without records that others can inspect and results that can be tested again, a striking claim can spread far beyond what its evidence supports.
