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	Keyness Analysis	Analisi Critica del Discorso
Campo	Linguistica	Qualitativo
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1997	Late 1970s–1990s (systematised ~1979–1995)
Ideatore	Mike Scott	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
Tipo	Corpus comparison of relative word frequencies	Qualitative research method
Fonte seminale	Scott, M. (1997). PC analysis of key words — and key key words. System, 25(2), 233–245.	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
Alias	Keyword Analysis, Corpus Keyness, Keyness Statistics	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
Correlati	3	6
Sintesi	Keyness analysis identifies the words that are characteristically frequent (or infrequent) in a target corpus relative to a reference corpus, using statistical tests to measure how unexpected each word's frequency is. Introduced by Mike Scott in 1997, it answers the question 'what is this text or collection distinctively about?' and is a central technique in corpus linguistics and corpus-assisted discourse analysis for surfacing the salient vocabulary of a genre, period, author, or social group.	Critical Discourse Analysis (CDA) is a qualitative method that examines how language in texts and talk constructs, sustains, and challenges relations of power, ideology, and social inequality. Drawing on linguistics, social theory, and critical philosophy, CDA treats discourse not merely as communication but as social practice — a site where dominance is reproduced and where resistance can be articulated. Developed in the late twentieth century by Norman Fairclough, Teun van Dijk, and Ruth Wodak, among others, CDA is applied to political speeches, media texts, policy documents, educational materials, and institutional interactions.