This document discusses key research terminology and methods. It defines terms like circulation, hits, box office figures, ratings, and sales that are used to measure various media. It also defines and provides examples of primary research methods like questionnaires, interviews, focus groups, and product analysis. Both quantitative and qualitative research approaches are explained. Advantages and disadvantages of primary and secondary research are outlined. Finally, it discusses purposes of research like audience, market, and production research, and defines objective, subjective, valid, and reliable research.