One of the most prominent types of qualitative research is case study research, where researchers get very close to a small set of cases of a phenomenon. The results of this may then be transferred to other cases (though not generalized to absolute truths), or used as the foundation for subsequent quantitative research. Note that qualitative research is often used in nursing and medicine as well, and you may see sources that talk about it in those domains; generally, the concepts are relatively transferable.
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