Philosophical Research: Deals with abstract concepts, logic, and reasoning to analyze ideas and theories.
Historical Research: Involves studying past events, documents, and sources to understand trends and patterns.
Survey Research: Collects data from a sample population using questionnaires, interviews, or observations.
Observation: While observation is a data collection technique, it is not considered a standalone method of research. Instead, it is used within various research methods like surveys, experiments, and case studies.