手法を比較

	マルチソース参加観察法	ケーススタディリサーチ（Case Study Research）	エスノグラフィー	参与観察
分野	調査方法論	質的手法	質的手法	質的研究
系統	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1980s (building on early 20th-century fieldwork traditions)	1984 (seminal codification)	c. 1922 (Malinowski's Argonauts of the Western Pacific)	1922
提唱者	Developed from classical participant observation traditions (Bronislaw Malinowski, Chicago School); multi-source extension codified by Hammersley & Atkinson and Spradley	Robert K. Yin (systematised in Case Study Research, 1984)	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology	Bronislaw Malinowski
種類	Qualitative data collection technique	Qualitative research design	Qualitative fieldwork tradition	Method
原典	Spradley, J. P. (1980). Participant Observation. Holt, Rinehart and Winston. ISBN: 978-0030445019	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	Geertz, C. (1973). The Interpretation of Cultures. Basic Books. ISBN: 978-0465026432
別名	multi-site participant observation, triangulated participant observation, multi-vantage participant observation, MSPO	Vaka Çalışması (Case Study), case study design, case study methodology	Etnografi, participant observation, fieldwork, ethnographic research	ethnographic observation, participatory observation, overt observation, immersive observation
関連	3	5	5	4
概要	Multi-source participant observation is a qualitative data collection technique in which the researcher is embedded within a social setting and systematically gathers observational data from multiple vantage points, sites, or informant roles simultaneously. By triangulating across sources, the method strengthens credibility and provides a richer, more complete picture of social phenomena than single-site observation alone.	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.	Participant observation is a qualitative research method in which the researcher embeds themselves within a community, organization, or social setting for an extended period, engaging in the activities and relationships of the group while systematically observing and documenting behavior, interactions, and cultural meaning. Pioneered by Malinowski in the 1920s and developed in anthropology, the method has been adopted across sociology, education, health sciences, and organizational research. The researcher functions as both insider (participating in group activities) and outsider (maintaining analytical distance), generating thick description—rich accounts of context, behavior, and meaning that reveal how people actually live and interact.