This document discusses various methods for collecting primary data, including surveys, observations, interviews, and projective techniques. It provides details on each method and compares their advantages. Surveys gather information by asking questions, while observations involve watching behaviors. Interviews allow for in-depth discussion through open-ended questions. Projective techniques use indirect methods like word associations to understand unconscious motivations. Collecting high-quality primary data is important for research through methods tailored to each project's needs.