مقایسهٔ روش‌ها

	نمونه‌گیری نظری آزمایشی	نظریه داده‌بنیاد
حوزه	روش‌شناسی پیمایش	پژوهش کیفی
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1967 (theoretical sampling origin); compound practice formalized in qualitative methodology literature	1967
پدیدآور	Glaser & Strauss (theoretical sampling); pilot study concept is longstanding in research methodology	Barney Glaser and Anselm Strauss
نوع	Qualitative sampling strategy with pilot phase	Method
منبع بنیادین	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine. ISBN: 978-0202302607	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
نام‌های دیگر	pilot-phase theoretical sampling, exploratory theoretical sampling, preliminary theoretical sampling	GT, Grounded Theory Approach
مرتبط	3	3
خلاصه	Pilot theoretical sampling applies the logic of theoretical sampling — selecting participants based on emerging concepts and theory — within a deliberate pilot or preliminary phase of a study. Rather than committing immediately to a full sampling strategy, the researcher conducts a small initial round of data collection and analysis to test whether theoretical sampling is feasible, to refine the sensitizing concepts guiding participant selection, and to identify whether the field is productive before full-scale data collection begins.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.