Jean M. Twenge is a psychologist and professor of psychology at San Diego State University, renowned for her groundbreaking research on generational differences and cultural change. She is the author of several influential books, including "iGen", "Generations", and "The Narcissism Epidemic", which explore how shifting social trends are reshaping the mental health, values, and behaviors of successive generations. Drawing on decades of data, Twenge offers compelling insights into the impact of technology, social media, and cultural forces on modern life. Her work has sparked widespread public debate and earned her recognition as one of today's most influential social scientists.