Σύγκριση μεθόδων

	Στοχευμένη Συλλογή Δεδομένων	Διαχρονική Έρευνα
Πεδίο	Μεθοδολογία Επισκοπήσεων	Μεθοδολογία Επισκοπήσεων
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1970s–present (formalised by Dillman 1978; expanded to internet surveys 2000s)	1940s (panel survey tradition); longitudinal designs codified mid-20th century
Δημιουργός	Don A. Dillman (Tailored Design Method for mail/remote surveys)	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
Τύπος	Quantitative / mixed-methods data collection technique	Quantitative / mixed-methods survey design
Θεμελιώδης πηγή	Dillman, D. A., Smyth, J. D., & Christian, L. M. (2014). Internet, Phone, Mail, and Mixed-Mode Surveys: The Tailored Design Method (4th ed.). Wiley. ISBN: 978-1118456149	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
Εναλλακτικές ονομασίες	distance survey, self-administered remote questionnaire, remote questionnaire, distributed survey	panel survey, repeated-measures survey, longitudinal panel study, wave survey
Συναφείς	6	3
Σύνοψη	A remote survey is a structured data collection method in which respondents complete a questionnaire without the researcher being physically present. Delivered via mail, telephone, email, web platforms, or mobile apps, it enables researchers to reach geographically dispersed samples at relatively low cost. The method is central to social-science, public-health, and organisational research and is codified in Dillman's widely used Tailored Design Method.	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.