So sánh phương pháp

	Thiết kế Khảo sát Tam giác	Nghiên cứu nhóm tập trung	Nghiên cứu phương pháp hỗn hợp
Lĩnh vực	Phương pháp luận khảo sát	Định tính	Định tính
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	1978 (Denzin); widely operationalized in survey contexts from the 1990s onward	1940s (sociological origin); modern applied form from the 1980s–1990s	—
Người khởi xướng	Norman K. Denzin (triangulation concept); Alan Bryman (mixed-methods survey application)	Robert K. Merton (sociological precursor, 1940s); popularised in applied research by Richard A. Krueger	—
Loại	Mixed-methods data collection design	Qualitative data collection method	Research design framework
Công trình gốc	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.	Krueger, R.A. & Casey, M.A. (2014). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage. ISBN: 978-1483365244	Creswell, J.W. & Plano Clark, V.L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379
Tên gọi khác	survey triangulation, multi-method survey, convergent survey design, cross-validated survey	focus group discussion, FGD, group interview, Odak Grup Araştırması	Karma Yöntem Araştırması (Mixed Methods), multi-method research, triangulation design
Liên quan	5	6	4
Tóm tắt	A Triangulated Survey deliberately combines a structured survey instrument with at least one additional data source — such as interviews, focus groups, observation, or a second survey — so that findings from each source can be cross-validated against the others. Rooted in Denzin's concept of methodological triangulation, the design strengthens credibility by checking whether independent lines of evidence converge on the same conclusions. It is especially common in applied social, educational, and health research.	Focus group research is a qualitative data-collection method in which a trained moderator guides structured discussions with homogeneous groups of six to ten participants to explore ideas, attitudes, and perceptions on a defined topic. Developed from sociological roots in the 1940s and systematised for applied research by Krueger and Casey, the method leverages group interaction as a data source — revealing not just what people think, but how they negotiate and articulate views in a social setting.	Mixed methods research is a systematic research design in which quantitative and qualitative data are collected and analysed within a single study. Formalised by Creswell and Plano Clark (2003, 3rd ed. 2018), it offers three principal design variants — concurrent, sequential, and transformative — and strengthens findings through triangulation across both data strands.