What is the research method in which a researcher conducts an in-depth investigation of an individual subject?

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The case study method involves conducting an in-depth investigation of an individual or a small group of individuals. It is often used in clinical psychology, medicine and other fields where a deep understanding of a specific case is required. This method allows researchers to gather detailed information about the participant's history, behavior, thoughts, and emotions through interviews, observation, and examination of documents.

What Is the Research Method in Which a Researcher Conducts