Jean M. Twenge, PhD, a professor of psychology at San Diego State University, is the author of more than a hundred scientific publications and several books based on her research, including Generations, iGen, and Generation Me.

Her research has been covered in Time, The Atlantic, Newsweek, The New York Times, USA TODAY, and The Washington Post. She has also been featured on Today, Good Morning America, Fox and Friends, CBS This Morning, and NPR. She lives in San Diego with her husband and three daughters.

“The biggest influences on generations overall are technology, individualism and a slower life, meaning that the whole trajectory from infancy to old age has slowed down.”