So sánh phương pháp

	Phân tích diễn ngôn phê phán theo chiều dọc	Phân tích nội dung định tính theo chiều dọc
Lĩnh vực	Định tính	Định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1990s–2000s (CDA foundations ~1989–1992; longitudinal applications consolidated through 2000s)	2000s–2010s
Người khởi xướng	Norman Fairclough; Ruth Wodak	Philipp Mayring (foundational QCA); longitudinal extension developed across qualitative health and social research traditions
Loại	Qualitative longitudinal discourse design	Qualitative analytical method
Công trình gốc	Fairclough, N. (1992). Discourse and Social Change. Polity Press. ISBN: 978-0745612690	Mayring, P. (2000). Qualitative content analysis. Forum: Qualitative Social Research, 1(2), Art. 20.
Tên gọi khác	Longitudinal CDA, diachronic critical discourse analysis, longitudinal discourse study, temporal CDA	LQCA, longitudinal QCA, repeated qualitative content analysis, panel qualitative content analysis
Liên quan	6	3
Tóm tắt	Longitudinal Critical Discourse Analysis (LCDA) combines the critical discourse analysis tradition — which examines how language constructs and reproduces power, ideology, and social inequality — with a longitudinal design that collects and compares texts at multiple time points. By tracking discursive change over time, LCDA reveals how ideological representations, social identities, and power relations shift, stabilise, or are contested across different historical or political periods.	Longitudinal qualitative content analysis (LQCA) applies systematic content analysis to text data gathered from the same participants, settings, or documents at two or more points in time. The method preserves the interpretive rigour of qualitative content analysis while adding an explicit temporal dimension, enabling researchers to track how meanings, experiences, categories, or discourse shift, deepen, or stabilise across time rather than producing a single-point-in-time description.