"Middletown: A Study in Modern American Culture" is a sociological study published in 1929 by Robert S. Lynd and Helen Merrell Lynd. The research focuses on the lives of residents in a small town in Indiana, named Middletown, examining their social structures, values, and daily activities. The study highlights the impact of industrialization and modernization on American life during the early 20th century. The Lynds employed a combination of qualitative and quantitative research methods, including interviews and surveys, to gather data. Their findings revealed significant insights into the changing dynamics of family life, religion, education, and community engagement, making it a foundational work in the field of sociology.