So sánh phương pháp

	Nghiên cứu tình huống	Dân tộc học	Nghiên cứu nhóm tập trung
Lĩnh vực	Định tính	Định tính	Định tính
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	1984 (seminal codification)	c. 1922 (Malinowski's Argonauts of the Western Pacific)	1940s (sociological origin); modern applied form from the 1980s–1990s
Người khởi xướng	Robert K. Yin (systematised in Case Study Research, 1984)	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology	Robert K. Merton (sociological precursor, 1940s); popularised in applied research by Richard A. Krueger
Loại	Qualitative research design	Qualitative fieldwork tradition	Qualitative data collection method
Công trình gốc	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Hammersley, M. & Atkinson, P. (2019). Ethnography: Principles in Practice (4th ed.). Routledge. ISBN: 978-1138504462	Krueger, R.A. & Casey, M.A. (2014). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage. ISBN: 978-1483365244
Tên gọi khác	Vaka Çalışması (Case Study), case study design, case study methodology	Etnografi, participant observation, fieldwork, ethnographic research	focus group discussion, FGD, group interview, Odak Grup Araştırması
Liên quan	5	5	6
Tóm tắt	Case study research is a qualitative research design that investigates a specific phenomenon, individual, group, organisation, or event in depth within its real-world context. Systematised by Robert K. Yin in 1984, it supports single-case and multiple-case designs and draws on multiple data sources — interviews, observation, documents, and artefacts — to build a rich, contextualised account of a bounded unit.	Ethnography is a qualitative research tradition in which a researcher immerses themselves in a social group or community over an extended period — typically three to six months or longer — to study its culture, values, and behaviours in their natural setting. Originating in social and cultural anthropology, and consolidated as a rigorous method by Bronisław Malinowski in the early twentieth century, ethnography produces rich, contextualised accounts of how people live, work, and make meaning together.	Focus group research is a qualitative data-collection method in which a trained moderator guides structured discussions with homogeneous groups of six to ten participants to explore ideas, attitudes, and perceptions on a defined topic. Developed from sociological roots in the 1940s and systematised for applied research by Krueger and Casey, the method leverages group interaction as a data source — revealing not just what people think, but how they negotiate and articulate views in a social setting.