เปรียบเทียบวิธี

	ไดอารี่การวิจัยเชิงสำรวจระยะยาว	การสำรวจแบบระยะยาว
สาขาวิชา	ระเบียบวิธีสำรวจ	ระเบียบวิธีสำรวจ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1970s–1990s	1940s (panel survey tradition); longitudinal designs codified mid-20th century
ผู้ริเริ่ม	Rooted in Zimmerman & Wieder's diary-interview method (1977); developed further in qualitative longitudinal research through the 1980s–1990s	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
ประเภท	Qualitative longitudinal data collection technique	Quantitative / mixed-methods survey design
แหล่งต้นตำรับ	Zimmerman, D. H., & Wieder, D. L. (1977). The diary: Diary-interview method. Urban Life, 5(4), 479–498.	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
ชื่อเรียกอื่น	longitudinal reflexive journal, longitudinal researcher diary, longitudinal field diary, longitudinal research log	panel survey, repeated-measures survey, longitudinal panel study, wave survey
ที่เกี่ยวข้อง	4	3
สรุป	A longitudinal research diary is a structured, ongoing record kept by the researcher throughout an extended study, capturing observations, decisions, emerging insights, and methodological reflections at repeated intervals over weeks, months, or years. It functions simultaneously as a reflexivity tool and a secondary data source, documenting how the inquiry evolves, how researcher positionality shifts, and how contextual changes influence the data collection process across time.	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.