Vertaile menetelmiä

	Pitkittäistutkimus	Havainnointi ilman osallistumista – Systemaattinen etäinen kenttähavainnointi	Osallistuva havainnointi
Tieteenala	Kyselytutkimuksen metodologia	Kyselytutkimuksen metodologia	Laadullinen tutkimus
Menetelmäperhe	Process / pipeline	Process / pipeline	Process / pipeline
Syntyvuosi	1940s (panel survey tradition); longitudinal designs codified mid-20th century	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys	1922
Kehittäjä	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology	Bronislaw Malinowski
Tyyppi	Quantitative / mixed-methods survey design	Qualitative / quantitative observational data collection	Method
Alkuperäislähde	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.	Geertz, C. (1973). The Interpretation of Cultures. Basic Books. ISBN: 978-0465026432
Rinnakkaisnimet	panel survey, repeated-measures survey, longitudinal panel study, wave survey	detached observation, systematic observation, structured field observation, external observation	ethnographic observation, participatory observation, overt observation, immersive observation
Liittyvät	3	5	4
Tiivistelmä	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.	Non-participant observation is a data-collection method in which the researcher observes behavior, interactions, or events in a natural or structured setting without joining or influencing the activity under study. The observer maintains a deliberate distance from participants to minimize their own effect on the phenomena being recorded, producing field notes, behavioral tallies, or recordings that reflect naturally occurring behavior rather than behavior shaped by researcher involvement.	Participant observation is a qualitative research method in which the researcher embeds themselves within a community, organization, or social setting for an extended period, engaging in the activities and relationships of the group while systematically observing and documenting behavior, interactions, and cultural meaning. Pioneered by Malinowski in the 1920s and developed in anthropology, the method has been adopted across sociology, education, health sciences, and organizational research. The researcher functions as both insider (participating in group activities) and outsider (maintaining analytical distance), generating thick description—rich accounts of context, behavior, and meaning that reveal how people actually live and interact.