
I tested 5 marketing principles to see if they really worked
Nudge
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The Endowment Effect
The idea that the vaccine is reserved for you boosted uptake by about 4.6%. In another example, Publishers Clearing House sends out winning numbers and tells people they have to surrender or claim their number. The next principle I wanted to test is a very similar principle called loss of version. It is the idea that humans feel the pain of a loss two times more than the pleasure of a gain.
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