His book Whistling Vivaldi: How Stereotypes Affect Us and What We Can Do is about his experience learning what an identity is, the effects that stereotype threat and identity threat have on identities of individuals, how it affects their lives and what can be done to eliminate these effects. The book highlights terms such as stereotype, identity threat, and identity contingency. Where stereotype threat is a situation in which people feel they can confirm a stereotype about their particular social group. And identity threat occurs when a person feels pressured to have a negative impact on the perception of their social group. These two terms go hand in hand and can be caused by identity contingencies which are situations in which environmental cues can influence how one perceives an identity, especially one of one's own. For example, an older person may walk into a modern office full of younger employees, they might notice how everyone is younger, the style of the office and the overall atmosphere. This in turn may make this older person believe that they are not suited to this job or that they may appear outdated, which may later affect their performance in said job. These threats and contingencies happen everywhere and I'm not