Susan Mettes was one of the main researchers and writers for several of these 100-page booklets. They involve writing surveys, gathering data, analyzing data, teasing out findings, and putting the findings into charts and text for a popular audience.
"Barna Group is a visionary research and resource company located in Ventura, California. Started in 1984, the firm is widely considered to be a leading research organization focused on the intersection of faith and culture."