مقایسهٔ روشها
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| نمونهگیری موارد انحرافی× | نمونهگیری موردی معمول× | |
|---|---|---|
| حوزه | روششناسی پیمایش | روششناسی پیمایش |
| خانواده | Process / pipeline | Process / pipeline |
| سال پیدایش≠ | 1990 | 1980s (systematized in Patton 1990/2002) |
| پدیدآور | Michael Quinn Patton | Michael Quinn Patton |
| نوع | Purposive qualitative sampling strategy | Purposive qualitative sampling strategy |
| منبع بنیادین | Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711 | Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711 |
| نامهای دیگر | extreme case sampling, outlier sampling, negative case sampling, deviant-case selection | typical case selection, modal case sampling, representative case sampling, average case sampling |
| مرتبط | 5 | 5 |
| خلاصه≠ | 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. | Typical case sampling is a purposive strategy in which the researcher deliberately selects cases that represent what is ordinary, normal, or most common within a target group. Rather than seeking outliers or the widest possible variation, the goal is to illustrate and communicate what a typical experience, program, or phenomenon looks like to stakeholders or audiences unfamiliar with it. The strategy is widely used in qualitative evaluation research and program reporting. |
| ScholarGateمجموعهداده ↗ |
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