Do you sometimes feel like you made a choice you didn’t really want to make? Marketers use a lot of tricks to get you to spend more money than you meant to. One of the most popular is “the decoy effect.” When faced with two choices—like a small or large drink—most people can pick pretty easily. Watch this video to learn how adding a third choice, or a “decoy” (like a medium size), can actually manipulate you into buying the more expensive option—even if you didn’t really want to.