Our expectations can greatly influence the way we experience the world. The best-known examples of this are placebo and nocebo effects–where we expect that a treatment will or won’t work, respectively. These effects can have a dramatic impact on the treatment’s effectiveness. However, there are many other ways that our expectations can determine our experiences. For example, the expectations we have about what food will taste like—and whether we’re going to like that taste—go a long way towar...