Research and graduate training activities in demography and human ecology are coordinated by the Center for Demography and Ecology (CDE). About 30 predoctoral students each year receive financial aid from the Center. Traineeships are funded by a grant from the NIH, and research assistantships are funded by many research grants. The training program includes advanced theoretical and methodological training in demography and human ecology, an apprenticeship in the art and practice of research, and specialized research for the master’s thesis and doctoral dissertation. Center faculty and students carry out research on many aspects of population composition, distribution, and change, and on demographic methodology.