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decoy effect - Wiktionary, the free dictionary

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Noun

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decoy effect (plural decoy effects)

  1. (marketing) The phenomenon whereby consumers will tend to have a specific change in preference between two options when also presented with a third option that is asymmetrically dominated: that is, the third option is inferior in all respects to one option, but, in comparison to the other, it is inferior in some respects and superior in others.
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