Two psychologists explore the hidden biases we all carry from a lifetime of exposure to cultural attitudes about age, gender, race, ethnicity, religion, social class, sexuality, disability status, and nationality. Using their experience with the Implicit Association Test, a method that gives us a glimpse of our unconscious biases at work, the authors question the extent to which our perceptions of social groups shape our judgments about people's character, abilities, and potential. Explaining the science clearly and plainly, the authors guide us through the workings of the brain, how it uses common stereotypes, and how to "outsmart the machine" that relies on them. Powerful, challenging and revealing, this book is an invitation to understand our own minds and, in the process, be fairer to those around us.