Σύγκριση μεθόδων

	Έρευνα με Δείγμα Πάνελ	Έρευνα με διαχρονικές (διαμήκεις) δημοσκοπήσεις
Πεδίο	Ερευνητικός Σχεδιασμός	Ερευνητικός Σχεδιασμός
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	Mid-20th century; formalized as a distinct design by the 1940s–1960s in sociological and economic research	Mid-20th century (formalized ~1950s–1970s)
Δημιουργός	Established through social science survey methodology; foundational reference: Kasprzyk et al. (1989)	Survey methodology tradition; codified in social sciences by scholars including W.S. Robinson (1950) and later Scott Menard
Τύπος	Quantitative longitudinal observational design	Quantitative observational research design
Θεμελιώδης πηγή	Kasprzyk, D., Duncan, G., Kalton, G., & Singh, M. P. (Eds.). (1989). Panel Surveys. Wiley. ISBN: 978-0471617143	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922452
Εναλλακτικές ονομασίες	panel survey, longitudinal survey panel, repeated survey design, panel data survey	longitudinal survey study, repeated-measures survey, prospective survey design, panel survey
Συναφείς	5	5
Σύνοψη	Panel-based survey research is a quantitative longitudinal design in which the same set of respondents — the panel — is surveyed with structured questionnaires at two or more distinct time points. By tracking the same individuals over time, the design captures intra-individual change, documents how outcomes evolve, and enables stronger causal inference than a single cross-sectional survey can provide. It is widely used in social science, economics, public health, and education research.	Longitudinal survey research collects structured questionnaire data from the same individuals (or units) at two or more points in time. Unlike a one-shot cross-sectional survey, this design captures change, stability, and temporal ordering of variables — enabling researchers to track trajectories, test causal sequences, and distinguish cohort effects from aging effects within a quantitative framework.