Scott is a research professor who conducts studies on marriage and romantic relationships. Along with colleagues, he also develops materials to help people in their relationships based on the best social science possible. In addition to numerous journal articles and book chapters, he has written or co-written a number of books, including The Power of Commitment, 12 Hours to a Great Marriage, Fighting for Your Marriage, and A Lasting Promise. Together with Howard Markman and Natalie Jenkins, he heads up a team that has produced various materials for use in marriage and relationship education, including PREP, Within Our Reach, Within My Reach, and other programs to meet the specific needs of those seeking to build strong and healthy marriages and relationships. With Howard Markman and Galena Rhoades, he heads up a research team at the University of Denver's Psychology Department.