So sánh phương pháp

	Phương pháp Nhật ký Dọc	Khảo sát dọc
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1942 (diary method); longitudinal variant formalised 1980s–2000s	1940s (panel survey tradition); longitudinal designs codified mid-20th century
Người khởi xướng	Allport (1942); systematic longitudinal extension developed by Bolger, Davis & Rafaeli (2003)	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
Loại	Longitudinal qualitative/quantitative data collection	Quantitative / mixed-methods survey design
Công trình gốc	Bolger, N., Davis, A., & Rafaeli, E. (2003). Diary methods: Capturing life as it is lived. Annual Review of Psychology, 54(1), 579–616.	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
Tên gọi khác	diary study (longitudinal), daily diary method, repeated-measures diary, longitudinal self-report diary	panel survey, repeated-measures survey, longitudinal panel study, wave survey
Liên quan	3	3
Tóm tắt	The Longitudinal Diary Method is a data collection technique in which participants record experiences, thoughts, feelings, or behaviors in structured diary entries repeatedly over an extended period — from days to months or even years. Unlike a one-shot survey, it tracks within-person change, daily fluctuation, and temporal processes in natural settings, making it especially powerful for studying how phenomena evolve over 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.