The document defines key terminology used in research including circulation, hits, box office figures, ratings, and sales. It then discusses different types of primary research such as questionnaires, surveys, interviews, focus groups, and product analysis. Secondary research is defined as studying previously undertaken research. Qualitative research aims to find in-depth opinions, beliefs, and reasoning through open-ended questions, while quantitative research expresses data as quantities through closed questions. Other types of research discussed include audience research, market research, and production research.