This is a cooperative venture between the Sociology department and the Office of Population Research (OPR), a distinguished unit which is one of the oldest and most internationally renowned in its field. OPR offers sociology graduate students a supportive intellectual environment, opportunities to participate in diverse projects either independently or in collaboration with faculty, and exposure to numerous presentations by visiting social scientists. The weekly Notestein Seminar in Demography is a focal point for students and faculty interested in demography. Students specializing in the field normally take an intensive two-semester sequence in population issues and demographic techniques during their first year, the final exam in which composes part of their General Examination. The university also provides a separate Ph.D. program in demography for students who may not be interested in sociology.