Сравнение на методи

	Напречно-релационно проучване	Панелни изследвания	Релационно изследване
Област	Дизайн на изследването	Дизайн на изследването	Дизайн на изследването
Семейство	Process / pipeline	Process / pipeline	Process / pipeline
Година на възникване	1960s–1980s (formalized in panel and longitudinal survey literature)	1970s-1980s (econometric formalization); earlier social survey use from 1940s	Mid-20th century onward (systematised ~1960s–1990s)
Създател	Classical survey methodology (Campbell & Stanley, 1963; Kessler & Greenberg, 1981)	Social science and econometric traditions; systematized by Cheng Hsiao and others from the 1970s-1980s	Established in educational and social science research methodology; systematised by Fraenkel & Wallen and others
Тип	Non-experimental quantitative design	Quantitative longitudinal observational design	Quantitative non-experimental survey design
Основополагащ източник	Singer, J. D., & Willett, J. B. (2003). Applied Longitudinal Data Analysis: Modeling Change and Event Occurrence. Oxford University Press. ISBN: 978-0195152968	Hsiao, C. (2003). Analysis of Panel Data (2nd ed.). Cambridge University Press. ISBN: 978-0521522717	Fraenkel, J. R., Wallen, N. E., & Hyun, H. H. (2009). How to Design and Evaluate Research in Education (8th ed.). McGraw-Hill. ISBN: 978-0073525748
Други названия	longitudinal correlational survey, prospective relational survey, repeated-measures relational survey, panel relational survey	panel study, panel survey, longitudinal panel, repeated-measures panel	correlational survey, associational survey, relationship survey design, relational descriptive survey
Свързани	3	3	4
Резюме	A longitudinal relational survey follows the same sample at two or more time points, collecting structured questionnaire data each wave and examining how the relationships among variables change, strengthen, weaken, or emerge across time. Unlike a cross-sectional relational survey that offers a single snapshot, this design captures temporal dynamics and allows researchers to test whether earlier measurements predict later outcomes, making it valuable for studying development, attitude change, and causal ordering.	Panel research is a quantitative longitudinal design in which the same individuals, organizations, or other units are measured repeatedly across two or more time points. Unlike cross-sectional surveys that capture a single snapshot, a panel tracks change within units, enabling researchers to separate genuine within-unit change from between-unit differences and to model causal dynamics over time.	Relational survey research is a quantitative, non-experimental design that gathers structured self-report data from a sample and examines the statistical associations among two or more variables. Unlike purely descriptive surveys, which only characterise distributions, relational surveys ask whether and how strongly variables co-vary — providing evidence of relationships without manipulating conditions or establishing causation.