So sánh phương pháp

	Khảo sát Quan hệ Mặt cắt Ngang	Nghiên cứu mô tả
Lĩnh vực	Thiết kế nghiên cứu	Thiết kế nghiên cứu
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Mid-20th century onward	Late 19th century; formalized in social/behavioral sciences ~1960s–1980s
Người khởi xướng	Rooted in survey methodology traditions; codified by Fraenkel, Wallen, and Creswell among others	Francis Galton, Karl Pearson (early empirical tradition); formalized in social science by Fred Kerlinger
Loại	Non-experimental quantitative design	Non-experimental quantitative research design
Công trình gốc	Fraenkel, J. R., Wallen, N. E., & Hyun, H. H. (2012). How to Design and Evaluate Research in Education (8th ed.). McGraw-Hill. ISBN: 978-0078097706	Creswell, J. W. (2014). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (4th ed.). Sage. ISBN: 978-1452226101
Tên gọi khác	cross-sectional correlational survey, one-time relational survey, cross-sectional associational survey, single-occasion relational survey	descriptive study, descriptive survey design, observational descriptive research, non-experimental descriptive research
Liên quan	4	3
Tóm tắt	A cross-sectional relational survey collects data from a representative sample at a single point in time and examines the statistical relationships (correlations, associations, predictions) among two or more variables. It combines the temporal efficiency of cross-sectional design with the relational focus of correlational survey research, making it one of the most widely used quantitative designs in education, social science, and health research when a quick, population-level picture of variable relationships is needed.	Descriptive research is a non-experimental quantitative design that systematically documents the characteristics, frequencies, or distributions of variables in a defined population at a given point in time. It answers 'what is' questions — who, what, when, where, and how much — without manipulating variables or drawing causal conclusions. It is one of the most widely used research designs across the social, behavioral, health, and education sciences.