What is the theme in From Front Porch to Back Seat: Courtship in Twentieth-century America by Beth L. Bailey?

Cultural evolution and trend-setters is a major theme in the book. Beth Bailey is focused in From Front Porch to Back Seat to explode the myth of 'traditional' courtship. While some standards of sexual propriety and distance between the sexes prior to marriage were prevalent in the United States prior to the mid-1960s, the ideals of courtship changed substantially. The twentieth century began without a national youth culture. Most individuals grew up without a concept of being part of a generation and spending most of their time with their communities and with people of all ages.