Confronta i metodi

	Indagine	Sondaggio faccia a faccia	Indagine Longitudinale
Campo	Metodologia delle indagini	Metodologia delle indagini	Metodologia delle indagini
Famiglia	Process / pipeline	Process / pipeline	Process / pipeline
Anno di origine	Late 19th century; systematic social-science use from 1940s	1930s–1940s (systematic survey era)	1940s (panel survey tradition); longitudinal designs codified mid-20th century
Ideatore	Francis Galton, Charles Booth, and early social statisticians; formalised by Paul Lazarsfeld in the 1940s	Established practice formalised in survey methodology (Gallup, Likert, and others from the 1930s–1940s)	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
Tipo	Quantitative (primarily) or mixed-methods data-collection instrument	Quantitative / mixed-mode data collection	Quantitative / mixed-methods survey design
Fonte seminale	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	Fowler, F. J. (2014). Survey Research Methods (5th ed.). Sage Publications. ISBN: 978-1452259000	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
Alias	questionnaire survey, survey research, self-report survey, questionnaire study	personal interview survey, in-person survey, PAPI survey, door-to-door survey	panel survey, repeated-measures survey, longitudinal panel study, wave survey
Correlati	6	5	3
Sintesi	A survey is a systematic data-collection method in which a standardised set of questions is posed to a sample of respondents to measure attitudes, behaviours, demographics, or other constructs. Surveys can be administered via paper, telephone, online platforms, or face-to-face. They are among the most widely used instruments in social, behavioural, health, and educational research because they can reach large, geographically dispersed samples at relatively low cost.	A face-to-face survey is a structured data collection method in which a trained interviewer meets respondents in person and administers a standardised questionnaire. The interviewer reads questions aloud, clarifies wording when permitted by protocol, and records answers — either on paper (PAPI) or a laptop/tablet (CAPI). This mode consistently achieves higher response rates and better data quality for complex or sensitive questionnaires than self-administered alternatives, and is the reference standard in large-scale population surveys.	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.