""The Trend Of The Teens"" is a book written by M. V. O'Shea in 1920, which offers a comprehensive analysis of the social, cultural, and psychological trends among teenagers during the early 20th century. The author explores the various factors that influence the behavior and attitudes of teenagers, including their family background, peer group dynamics, educational system, and media exposure. O'Shea also discusses the impact of urbanization, industrialization,...