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	Osservazione partecipante multi-fonte	Case Study Research
Campo	Metodologia delle indagini	Qualitativo
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1980s (building on early 20th-century fieldwork traditions)	1984 (seminal codification)
Ideatore	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)
Tipo	Qualitative data collection technique	Qualitative research design
Fonte seminale	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
Alias	multi-site participant observation, triangulated participant observation, multi-vantage participant observation, MSPO	Vaka Çalışması (Case Study), case study design, case study methodology
Correlati	3	5
Sintesi	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.