Someone Claims That a Subliminal Message "Buy Popcorn" in the Middle

question 37

Multiple Choice

Someone claims that a subliminal message "buy popcorn" in the middle of a movie increases people's likelihood of buying popcorn. Which of the following would be the best way to test that claim?

• A) Display such a message in the middle of the movie and determine whether popcorn sales are higher before the message or after it.
• B) Display such a message every day for one month, and not at all the next month. Determine whether popcorn sales are higher during the month with the message.
• C) Display such a message on some days, randomly chosen, and not others. Determine whether popcorn sales are higher on days with the message.
• D) When people buy popcorn, ask them why they are buying it and whether or not they remember any messages on the screen.

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Definitions:

Guarantor

A guarantor is a person or entity that agrees to be responsible for another's debt or obligations, should the original party fail to meet their responsibilities.

Guarantee

A formal promise or assurance, typically in writing, that certain conditions will be fulfilled, especially that a product will be repaired or replaced if not of a specified quality.

Statute of Frauds

A legal concept that requires certain types of contracts to be in writing and signed by the party to be charged, in order to be legally enforceable.

Indemnity

A security or protection against a loss or other financial burden.