This document defines key terminology used in research such as circulation, hits, box office figures, and ratings. It also describes different types of research including primary research, secondary research, quantitative research, qualitative research, audience research, market research, and production research. For each type of research, definitions, advantages, disadvantages, and examples are provided. The document also distinguishes between objective and subjective research as well as valid and reliable research. It concludes by demonstrating how to reference sources using the Harvard referencing style.