Salespeople can fool your brain into thinking you want a product you really don’t. According to Dr. Deborah Searcy of Florida Atlantic University, retailers use this sneaky trick all the time: they tell you the price of an item and try to get you to buy it. If you say that price is too much, they’ll offer you a lower one. Because your mind has been “anchored” around the higher price, you think you’re getting a great deal, and you’re more likely to buy the item. But, if the salesperson had offered you the lower price right off the bat, chances are you wouldn’t have bought the product. Your brain is duped by the allure of a good deal. Next, test your noggin with these 19 brain teasers that stump most people!