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| Poikkeustapausten otanta× | Tapaustutkimus× | |
|---|---|---|
| Tieteenala≠ | Kyselytutkimuksen metodologia | Laadulliset menetelmät |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1990 | 1984 (seminal codification) |
| Kehittäjä≠ | Michael Quinn Patton | Robert K. Yin (systematised in Case Study Research, 1984) |
| Tyyppi≠ | Purposive qualitative sampling strategy | Qualitative research design |
| Alkuperäislähde≠ | Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711 | Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169 |
| Rinnakkaisnimet≠ | extreme case sampling, outlier sampling, negative case sampling, deviant-case selection | Vaka Çalışması (Case Study), case study design, case study methodology |
| Liittyvät | 5 | 5 |
| Tiivistelmä≠ | Deviant case sampling is a purposive qualitative sampling strategy in which the researcher intentionally selects cases that are unusual, exceptional, or markedly different from the norm — outliers, extreme successes, or conspicuous failures. The goal is not statistical representation but deep learning from cases that illuminate the boundaries of a phenomenon, challenge prevailing assumptions, or reveal processes that typical cases obscure. | 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. |
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