مقایسهٔ روش‌ها

	پژوهش مطالعه موردی	تحلیل محتوا	قوم‌نگاری
حوزه	کیفی	کیفی	کیفی
خانواده	Process / pipeline	Process / pipeline	Process / pipeline
سال پیدایش	1984 (seminal codification)	Systematised through Krippendorff's methodology work; 4th edition 2018	c. 1922 (Malinowski's Argonauts of the Western Pacific)
پدیدآور	Robert K. Yin (systematised in Case Study Research, 1984)	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology
نوع	Qualitative research design	Qualitative / mixed-method research technique	Qualitative fieldwork tradition
منبع بنیادین	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Hammersley, M. & Atkinson, P. (2019). Ethnography: Principles in Practice (4th ed.). Routledge. ISBN: 978-1138504462
نام‌های دیگر	Vaka Çalışması (Case Study), case study design, case study methodology	İçerik Analizi, systematic content coding, quantitative content analysis	Etnografi, participant observation, fieldwork, ethnographic research
مرتبط	5	5	5
خلاصه	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.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	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.