Explain example of steady price in regular sales

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A researcher studying the effects of price cuts on consumers' expectations makes uo two different histories of the store price of a hypothetical brand of laundry detergent for the past year. Eight students in a class view one or the other price history on a computer. Some students see a steady price, while others see regular sales that temporarily cut the price. Students are asked the price they would expect to pay. This is an example of?

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