Multiple Case-Based Critical Discourse Analysis
Also known as: multi-case CDA, comparative critical discourse analysis, cross-case CDA, multiple case CDA
Multiple case-based critical discourse analysis (multi-case CDA) combines the comparative logic of multiple case study design with the ideological and power-focused analytic apparatus of critical discourse analysis. The researcher selects two or more purposefully chosen cases, collects relevant texts or spoken discourse within each, applies CDA to reveal how language constructs power relations and ideologies within each case, and then synthesises findings across cases to identify patterns, contrasts, and broader sociocritical insights that a single-case design could not yield.
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When to use it
Choose multiple case-based CDA when your research question requires both the depth of critical discourse analysis and cross-contextual comparison — for example, when investigating how the same policy discourse is constructed differently across nations, institutions, or time periods, or when testing whether a discursive pattern identified in one site is particular to that context or socially widespread. It is especially well suited to critical policy analysis, media studies, organisational discourse research, and cross-national comparative work. Do not use it when a single focused site would suffice — the multiple case design adds analytical and practical demands that are only justified by a genuinely comparative question. Do not use it when data are numeric or when the analytical goal is frequency-based content analysis rather than ideologically oriented discourse critique.
Strengths & limitations
- Enables cross-contextual comparison that single-case CDA cannot deliver, strengthening analytic generalisability of critical findings.
- Replication logic across cases increases the credibility of claims about recurring discursive or ideological patterns.
- Rich, in-depth critical analysis within each case is preserved rather than sacrificed for breadth.
- Suitable for interrogating how power and ideology operate across institutions, nations, or policy domains simultaneously.
- Produces findings with both theoretical depth and comparative range, valuable for critical social science and applied linguistics.
- Substantially more time- and resource-intensive than single-case CDA; collecting and analysing dense textual data across multiple sites demands extended fieldwork and analytic effort.
- Maintaining analytic consistency across cases — using the same CDA framework rigorously in each — is challenging when cases differ in language, genre, or institutional context.
- Findings are context-sensitive qualitative insights, not statistically generalisable; cross-case patterns are theoretical rather than probabilistic.
- Case selection decisions have profound consequences for what can and cannot be concluded; poorly theorised case selection undermines the comparative contribution.
- Requires fluency in both qualitative case study methodology and the specific theoretical apparatus of CDA, a demanding combination of expertise.
Frequently asked
How many cases do I need for a multiple case-based CDA study?
Two cases is the minimum that enables comparison, and two to six is the typical range in published studies. The upper limit is set by the analytic depth that CDA demands: each case requires intensive textual analysis, so adding cases beyond six usually compromises rigour unless the team is large. The number should be driven by theoretical logic — how many cases are needed to test the replication or contrast argument — not by convenience.
Which CDA framework should I use within each case?
The three most established options are Fairclough's three-dimensional model (text, discursive practice, sociocultural practice), van Dijk's socio-cognitive approach (discourse, cognition, society), and Wodak's discourse-historical approach (context, genres, discourse, texts). All are legitimate; the choice should match the research question and the type of discourse under study. Whichever framework is chosen must be applied consistently across all cases to enable meaningful comparison.
Is multiple case-based CDA the same as comparative discourse analysis?
They overlap but are not identical. Comparative discourse analysis is a broad label for any systematic comparison of discourse across contexts; it does not necessarily carry a critical stance toward power and ideology. Multiple case-based CDA is specifically committed to the critical theoretical tradition of CDA — power, ideology, and social critique are foregrounded — while using multiple cases as the comparative scaffold. The critical orientation is not optional; it is definitional.
How do I ensure consistency when CDA requires interpretation?
Consistency is maintained through transparent documentation of the analytic framework, coding scheme, and decision rules used in every case; through member-checking or peer debriefing where appropriate; and through audit trails that allow a reader to trace each interpretive claim back to specific textual evidence. Researcher reflexivity — explicitly acknowledging the analyst's positionality and how it may shape interpretation — is also a recognised mechanism for managing interpretive consistency in CDA.
Can I combine multiple case-based CDA with quantitative corpus methods?
Yes. Corpus-assisted discourse studies (CADS) combines quantitative corpus analysis (keyword frequency, collocations, concordancing) with qualitative CDA interpretation, and this can be extended to a multiple case design. The corpus tools identify statistically salient linguistic patterns in each case's textual corpus; the CDA framework provides the critical interpretive lens. The combination can strengthen the rigour and replicability of the textual analysis stage, though the critical interpretation stage remains qualitative.
Sources
- Fairclough, N. (1995). Critical Discourse Analysis: The Critical Study of Language. Longman. ISBN: 978-0582219526
- Yin, R. K. (2014). Case Study Research: Design and Methods (5th ed.). Sage. ISBN: 978-1452242569
How to cite this page
ScholarGate. (2026, June 3). Multiple Case-Based Critical Discourse Analysis. ScholarGate. https://scholargate.app/en/qualitative/multiple-case-based-critical-discourse-analysis
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
- Critical Discourse AnalysisQualitative↔ compare
- Discourse AnalysisQualitative Research↔ compare
- Longitudinal Critical Discourse AnalysisQualitative↔ compare
- Multiple-Case StudyQualitative↔ compare
- Thematic AnalysisQualitative Research↔ compare