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	Studio di Caso Multiplo Longitudinale	Studio di caso comparativo
Campo	Qualitativo	Qualitativo
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1980s–2000s (Yin's multiple-case framework c. 1984; longitudinal qualitative elaboration c. 2003)	1984 (Yin); 1995 (Stake)
Ideatore	Robert K. Yin (multiple case design); Johnny Saldana (longitudinal qualitative methods)	Robert K. Yin; Robert E. Stake
Tipo	Qualitative longitudinal research design	Qualitative / mixed research design
Fonte seminale	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
Alias	longitudinal multi-case study, repeated multiple case study, panel case study, multi-site longitudinal case study	cross-case study, multi-site case study, multiple case study design, comparative case analysis
Correlati	6	4
Sintesi	Longitudinal multiple case study is a qualitative research design that examines two or more bounded cases through repeated data-collection waves over an extended period. By tracking each case across time and comparing patterns across cases, researchers can document how phenomena change, stabilise, or diverge — generating both depth within each site and breadth across sites that neither a single case nor a one-shot survey can provide.	Comparative case study is a qualitative research design in which two or more bounded cases are studied in depth and then systematically compared to identify similarities, differences, and patterns across contexts. Rooted in Yin's replication logic and Stake's multiple case framework, it is particularly suited to questions that ask how or why a phenomenon unfolds differently — or similarly — across distinct settings, populations, or time periods.