Mark PlumeMark Plume earned his Ph.D. in sociology at the University of Southern California and is the author of Revealing Our Social World: A Brief Introduction to Sociology, Revealing Our Social World: Fundamentals of Social Research, and Exploring Sociology Readings for Introductory Sociology. He has taught sociology for more than 30 years and is a professor at Reynolds Community College, where he teaches traditional and online courses in introductory sociology, marriage and family studies, and anthropology. He also teaches sociology classes, including research methods, at Virginia Commonwealth University. Dr. Plume's professional specialties include aging, addiction, family, and research methods. Read More Read Less