You can officially blame your genes for your addiction to bargain hunting

Do you find yourself waiting in line for sample sales at the crack of dawn? Are you excited to shop at Macy's on Thanksgiving? Then you might just have a genetic "flaw" that makes you more susceptible to bargain hunting.

According to Mark Ellwood, who just published the book Bargain Fever: How to Shop in a Discounted World, your brain releases the feel-good chemical, dopamine, when you find a bargain. (Ellwood calls dopamine "buyagra.") Most of us are able to clear the dopamine out of our systems so we're not tempted to buy those on-sale waxed jeans in every single color. But about a quarter of Caucasians have a "harmless gene flaw" which makes it harder to clear out the dopamine, which means they are riding that high for a lot longer, thus making them more tempted to shop for even more bargains. "It works much like any intoxicant: the more deals they experience, the more they crave," Ellwood wrote in Time.

Wondering if you're one of the 25%? Click here. If you have the ability to resist Alexander Wang at 50% off, then you're probably okay.

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