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| フィールドベースのスノーボールサンプリング× | スノーボールサンプリング(またはチェーン紹介サンプリング)× | |
|---|---|---|
| 分野 | 調査方法論 | 調査方法論 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1961 (foundational); field variant developed through 1970s–1980s ethnographic and hidden population research | 1961 |
| 提唱者≠ | Leo A. Goodman (snowball sampling); field adaptation through ethnographic and social network research traditions | Leo A. Goodman |
| 種類 | Non-probability sampling technique | Non-probability sampling technique |
| 原典 | Goodman, L. A. (1961). Snowball sampling. Annals of Mathematical Statistics, 32(1), 148–170. DOI ↗ | Goodman, L. A. (1961). Snowball sampling. Annals of Mathematical Statistics, 32(1), 148–170. DOI ↗ |
| 別名 | in-person snowball sampling, fieldwork chain-referral sampling, field snowball sampling, face-to-face referral sampling | chain-referral sampling, network sampling, respondent-driven sampling, referral sampling |
| 関連 | 3 | 3 |
| 概要≠ | Field-based snowball sampling is a non-probability chain-referral technique in which an initial set of in-person contacts (seeds) recruit further participants from within their real-world social networks, expanding the sample iteratively through face-to-face interaction in naturalistic field settings. It is the default snowball approach in ethnographic and community fieldwork, and is particularly valuable when the target population is hidden, hard-to-reach, or lacks a sampling frame. | Snowball sampling is a non-probability recruitment technique in which initial participants (seeds) refer the researcher to others who meet the study criteria, and those referrals in turn refer further participants. The sample grows incrementally — like a rolling snowball — until the required size or theoretical saturation is reached. It is the method of choice when a target population has no accessible sampling frame, such as undocumented migrants, illicit drug users, survivors of stigmatised experiences, or members of closed professional networks. |
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