পদ্ধতির তুলনা করুন

	ত্রিভুজাকার অ-অংশগ্রহণমূলক পর্যবেক্ষণ	অংশগ্রহণহীন পর্যবেক্ষণ
ক্ষেত্র	জরিপ পদ্ধতি	জরিপ পদ্ধতি
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1958 (observer roles); 1978 (triangulation applied to observation)	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys
প্রবর্তক	Norman K. Denzin (triangulation framework); Raymond Gold (observer roles taxonomy)	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology
ধরন	Qualitative data collection technique	Qualitative / quantitative observational data collection
মৌলিক উৎস	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.
অপর নাম	triangulated observation, multi-source non-participant observation, observational triangulation, observer triangulation	detached observation, systematic observation, structured field observation, external observation
সম্পর্কিত	3	5
সারসংক্ষেপ	Triangulated non-participant observation systematically combines two or more independent non-participant observation streams — using multiple observers, different time points, or distinct vantage points — to cross-validate field records of naturally occurring behaviour. The researcher remains outside the setting as a detached observer, and triangulation across sources reduces single-observer bias while strengthening the credibility of descriptive findings.	Non-participant observation is a data-collection method in which the researcher observes behavior, interactions, or events in a natural or structured setting without joining or influencing the activity under study. The observer maintains a deliberate distance from participants to minimize their own effect on the phenomena being recorded, producing field notes, behavioral tallies, or recordings that reflect naturally occurring behavior rather than behavior shaped by researcher involvement.