In 1957, James Vicary, a market researcher, conducted a six week test in a New Jersey movie theatre. A high-speed projector repeatedly and subliminal… - Derren Brown

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In 1957, James Vicary, a market researcher, conducted a six week test in a New Jersey movie theatre. A high-speed projector repeatedly and subliminally flashed the slogans ‘drink Coke’ and ‘eat popcorn’ over the film. I thought I’d make my own cinema ad to try something similar. According to Vicary, popcorn sales went up by 57.5% and Coke sales by 18.1%... Whether Vicary’s results were due to the subliminals can never be shown and the experiment has become shrouded in urban myth. This is the Genesis Cinema in East London, which kindly agreed to include our ad amongst the trailers for a screening of Ocean's Twelve, a carefully chosen film which, if the ad works, the audience will not be able to remember. Not a bad thing.