方法对比
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| 在线异常案例抽样× | 在线目的性抽样× | |
|---|---|---|
| 领域 | 调查方法论 | 调查方法论 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1990s–2000s (deviant case strategy); online variant ~2000s–2010s | 1990s–2000s (with growth of internet-based research) |
| 提出者≠ | Patton, M. Q. (deviant case strategy); online adaptation via web-based qualitative research practice | Adaptation of purposive sampling (Patton, 1987) to online/digital research contexts |
| 类型≠ | Purposive qualitative sampling strategy (online variant) | Non-probability qualitative sampling |
| 开创性文献≠ | Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage. [Chapter 5: Purposeful Sampling, deviant/extreme case strategy, pp. 231-234] ISBN: 978-0761919711 | Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711 |
| 别名 | online extreme case sampling, internet-based deviant case sampling, online outlier sampling, web-based atypical case sampling | internet-based purposive sampling, web purposive sampling, online criterion-based sampling, digital purposive sampling |
| 相关≠ | 5 | 3 |
| 摘要≠ | Online deviant case sampling is a purposive qualitative sampling strategy in which the researcher deliberately seeks out and recruits participants who represent extreme, unusual, or outlier instances of the phenomenon under study, using online channels such as forums, social media, specialist communities, or digital registries. It inherits the logic of Patton's deviant (extreme) case sampling and applies it in internet-mediated research contexts where rare or hard-to-reach atypical cases can be located more efficiently than through face-to-face methods. | Online purposive sampling applies the logic of criterion-based participant selection to digital recruitment channels — including social media platforms, online communities, email lists, and research recruitment websites. Researchers intentionally seek individuals who possess the characteristics, experiences, or expertise directly relevant to the research question, using internet-based tools to locate and screen them. The method preserves the defining feature of purposive sampling — deliberate selection based on fitness for purpose — while leveraging the reach and accessibility of online environments. |
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