The document summarizes a study that segmented Christians in the United States into five groups based on their beliefs, behaviors, attitudes, and involvement in spiritual activities. The five segments identified were Active Christians, Professing Christians, Liturgical Christians, Private Christians, and Cultural Christians. The study analyzed differences between the segments in terms of church attendance, media usage, beliefs, and other factors to understand how to effectively reach each group. The segmentation provides insights into the varying needs and behaviors of Christians to help tailor communications and products.