On Tuesday's show we heard from journalist and media critic Jennifer Posner, author of a new book Reality Bites Back: The Troubling Truth About Reality TV. In her book, Posner asserts that many of these shows promote sexist and racist stereotypes, and that they're cast and edited to make us think less and buy more. Are reality TV shows having a negative impact on our culture? Is there a case to be made for these shows having a positive effect? Do we need to view them with a critical eye? Listen to the interview below and tell us what you think.