Generations: The Real Differences Between Gen Z, Millennials, Gen X, Boomers, and Silents—and What They Mean for America's Future

by Jean M. Twenge

“During the ferment of the ’60s, a period of the famous ‘generation gap,’ we occupied, unnoticed as usual, the gap itself: When nobody over 30 was to be trusted, our age was thirtysomething.”