পদ্ধতির তুলনা করুন

	নৃগোষ্ঠীগত গবেষণা	কেস স্টাডি গবেষণা	ক্ষেত্র নোট
ক্ষেত্র	গুণগত গবেষণা	গুণগত গবেষণা	জরিপ পদ্ধতি
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1920s–1970s	1984 (Yin); 1995 (Stake)	Late 19th century (formalized in 20th century)
প্রবর্তক	Anthropology (Malinowski, Boas); applied in health and sociology (Geertz)	Robert K. Yin; Robert E. Stake; Sharan Merriam	Rooted in 19th-century anthropology and sociology; systematized by ethnographers such as Bronislaw Malinowski and later Robert Emerson et al.
ধরন	Method	Method	Qualitative data collection and recording technique
মৌলিক উৎস	Geertz, C. (1973). The interpretation of cultures: Selected essays. Basic Books.	Yin, R. K. (2014). Case study research: Design and methods (5th ed.). Sage Publications.	Emerson, R. M., Fretz, R. I., & Shaw, L. L. (1995). Writing Ethnographic Fieldnotes. University of Chicago Press. ISBN: 978-0226206813
অপর নাম	Ethnography, Participatory Observation, Field Research	Case Study, Single Case Study, Multiple Case Study	fieldnotes, observational notes, ethnographic notes, jottings
সম্পর্কিত	4	4	6
সারসংক্ষেপ	Ethnographic research is an immersive qualitative methodology in which researchers spend prolonged time in a community, organization, or social setting, combining participant observation, interviews, and document analysis to develop a rich, contextual understanding of a group's beliefs, practices, and social structures. Grounded in anthropology and refined for health, organizational, and social research, ethnography produces 'thick description' (Geertz 1973) that reveals the meaning and context underlying observable behavior.	Case study research is an intensive, contextual investigation of a single case (or small number of cases) to explore a phenomenon in depth. Developed systematically by Robert K. Yin (1984) and Robert E. Stake (1995), case study research employs multiple data sources (interviews, observation, documents, artifacts) to produce a holistic understanding of a bounded phenomenon within its real-world context.	Field notes are detailed written records created by researchers during or immediately after direct observation in a naturalistic setting. They capture what is seen, heard, and experienced — including behaviors, interactions, physical environments, and the researcher's own analytic impressions — forming the primary data source for ethnographic and observational studies.