So sánh phương pháp

	Nghiên cứu tương quan dựa trên bảng dữ liệu	Khảo sát dọc
Lĩnh vực	Thiết kế nghiên cứu	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1970s–1980s (formal panel analysis methods)	1940s (panel survey tradition); longitudinal designs codified mid-20th century
Người khởi xướng	Panel methodology systematized by economists and sociologists, notably Kessler & Greenberg (1981) and Cheng Hsiao (1986)	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
Loại	Quantitative observational design	Quantitative / mixed-methods survey design
Công trình gốc	Kessler, R. C., & Greenberg, D. F. (1981). Linear Panel Analysis: Models of Quantitative Change. Academic Press. ISBN: 9780124053502	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
Tên gọi khác	panel correlational study, longitudinal correlational panel, panel survey research, repeated-measures correlational design	panel survey, repeated-measures survey, longitudinal panel study, wave survey
Liên quan	3	3
Tóm tắt	Panel-based correlational research follows the same individuals, organizations, or units across multiple time points and quantifies associations among variables within that longitudinal structure. Unlike a one-shot correlational survey, the panel design captures temporal ordering and within-unit change, enabling researchers to test whether earlier values of one variable predict later values of another while statistically controlling for stable individual differences.	A longitudinal survey collects structured questionnaire data from the same individuals or units at two or more distinct points in time. By tracking the same respondents across waves, researchers can distinguish genuine change from stable individual differences, establish temporal ordering between variables, and model trajectories of attitudes, behaviors, or outcomes in ways that a single cross-sectional snapshot cannot support.