If the thought of talking politics with family over Thanksgiving dinner already has your blood boiling, take a few deep breaths and back away from the Black Friday ads.
Just looking at advertisements that hype a hot deal on a limited supply of items can shorten consumers' fuses, one study found.
On rare occasion, the quest for heavily discounted merchandise by throngs of shoppers has led to stampedes and brawls. There's even a website, BlackFridayDeathCount.com, tracking the mayhem.
"This behavior would be understandable if we were in a disaster situation and this was the last loaf of bread," said Kirk Kristofferson, assistant professor of marketing at...