השוואת שיטות

	מחקר מקרה מרובה אורכי	חקר מקרה אורכי
תחום	איכותני	איכותני
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1980s–2000s (Yin's multiple-case framework c. 1984; longitudinal qualitative elaboration c. 2003)	1984–1990 (foundational methodological codification)
הוגה השיטה	Robert K. Yin (multiple case design); Johnny Saldana (longitudinal qualitative methods)	Robert K. Yin (case study methodology); Andrew M. Pettigrew (longitudinal field research)
סוג	Qualitative longitudinal research design	Qualitative research design
מקור מכונן	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
כינויים	longitudinal multi-case study, repeated multiple case study, panel case study, multi-site longitudinal case study	longitudinal case research, panel case study, repeated case study, temporal case study
קשורות	6	6
תקציר	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.	A longitudinal case study is a qualitative research design that combines the in-depth, contextually rich focus of case study methodology with repeated data collection across multiple time points. Rather than capturing a single snapshot, it follows one or a small number of cases — an individual, group, organisation, or programme — over months or years to trace how processes, relationships, and meanings evolve. This design is well suited to questions about how and why things change, not merely what the state of affairs is at one moment.