iGen[a] is a 2017 nonfiction book by Jean Twenge that studies the lifestyles, habits and values of Americans born 1995–2012,[1] the first generation to reach adolescence after smartphones became widespread.

She argues that use of technology is not the only thing that distinguishes Gen Z from generations prior— the way in which their time is spent contributes to changes in their behaviors and attitudes toward religion, sexuality and politics.

Each of these surveys asked Zoomers quantitative and qualitative questions to determine if being raised synergistically with technology has made them less rebellious, more tolerant, less happy, less resilient to the challenge of adulthood, as Twenge asserts.

She did agree that there had been a recent downturn of mental health among the youth and concluded: "Let's hope the questions raised here foster more and better research about and with young people growing up in the digital age.

[4] Annalisa Quinn at NPR was skeptical, arguing that the book was part of the familiar trend of older generations feeling superior to younger ones ("one of our great human traditions").