David L. Morgan is a professor emeritus in Department of Sociology at Portland State University. He is a sociological social psychologist, who is widely known for his work on focus groups, including his book, Focus Groups as Qualitative Research, and as coauthor of The Focus Group Kit. In addition, he has worked extensively on mixed methods, including a book for SAGE, Integrating Qualitative and Quantitative Methods. Most recently, he has published Essentials of Dyadic Interviewing for Routledge, and A New Era in Focus Group Research, co-edited, with Rosaline Barbour, for Palgrave.