THE FOURTH TURNING THEORY - A Biblical perspective The 4th Turning Theory also known as the Strauss-Howe Generational Theory describes a theorized recurring generation cycle in American history and Western history. According to the theory, historical events are associated with recurring generational personas (archetypes). Each generational persona unleashes a new era (called a turning) lasting around 20–25 years, in which a new social, political, and economic climate (mood) exists. They are part