পদ্ধতির তুলনা করুন

	জীবন ইতিহাস গবেষণা	নৃগোষ্ঠীবিদ্যা	গ্রাউন্ডেড থিওরি
ক্ষেত্র	গুণগত	গুণগত	গুণগত গবেষণা
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	Early 20th century (Thomas & Znaniecki 1918–1920); systematised as interview method in the 1990s	c. 1922 (Malinowski's Argonauts of the Western Pacific)	1967
প্রবর্তক	William I. Thomas and Florian Znaniecki (sociological tradition); Robert Atkinson (interview method)	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology	Barney Glaser and Anselm Strauss
ধরন	Qualitative research method	Qualitative fieldwork tradition	Method
মৌলিক উৎস	Atkinson, R. (1998). The Life Story Interview. Sage. ISBN: 978-0761904496	Hammersley, M. & Atkinson, P. (2019). Ethnography: Principles in Practice (4th ed.). Routledge. ISBN: 978-1138504462	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
অপর নাম	life history method, life-history interview, biographical research, personal narrative research	Etnografi, participant observation, fieldwork, ethnographic research	GT, Grounded Theory Approach
সম্পর্কিত	6	5	3
সারসংক্ষেপ	Life history research is a qualitative method that captures the full arc of an individual's life — or a significant portion of it — through extended biographical interviewing and analysis of personal documents. Rooted in early Chicago School sociology, the method treats each life story as a window into broader social, cultural, and historical forces. The researcher and participant co-construct a narrative account that illuminates how personal experience is shaped by, and in turn shapes, wider social structures and processes.	Ethnography is a qualitative research tradition in which a researcher immerses themselves in a social group or community over an extended period — typically three to six months or longer — to study its culture, values, and behaviours in their natural setting. Originating in social and cultural anthropology, and consolidated as a rigorous method by Bronisław Malinowski in the early twentieth century, ethnography produces rich, contextualised accounts of how people live, work, and make meaning together.	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.