Why do Black Friday shoppers throw punches over bargains? A marketing expert explains 'psychological ownership'
- Written by Colleen P. Kirk, Assistant Professor of Marketing, New York Institute of Technology

Black Friday, the most celebrated shopping day of the year, abounds with tales of fistfights over discounted televisions or even stampedes as consumers rush to get that low-priced sweater they saw in an ad.
Many people chalk it up to bad behavior. But marketers like me have a term to describe one feeling that...
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