手法を比較

	デジタル記号論的分析	談話分析
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	Classical semiotics early 20th century; digital adaptation from the 1990s onward	1989 (Fairclough); 1987 (Potter & Wetherell)
提唱者	Rooted in Ferdinand de Saussure and Charles S. Peirce; digital applications developed by scholars such as David Chandler and Gunther Kress	Norman Fairclough; Jonathan Potter and Margaret Wetherell
種類	Qualitative interpretive analysis	Method
原典	Chandler, D. (2007). Semiotics: The Basics (2nd ed.). Routledge. ISBN: 978-0415363969	Fairclough, N. (1989). Language and power. Longman.
別名	DSA, digital semiotics, online semiotic analysis, digital sign analysis	DA, Critical Discourse Analysis, Discursive Analysis
関連	5	2
概要	Digital Semiotic Analysis applies the classical study of signs and meaning-making to content produced and circulated in digital environments. It examines how signifiers — words, images, icons, sounds, emojis, hyperlinks, and interface conventions — create meaning within digital texts such as websites, social media posts, memes, and online advertisements. The method draws on Saussurean dyadic semiotics and Peircean triadic semiotics, extended by Roland Barthes's connotation and myth framework and by contemporary multimodal semiotic theory developed for screen-based media.	Discourse analysis is a qualitative research methodology that examines how language, communication, and power shape meaning, identity, and social reality. Developed across linguistics, sociology, and psychology (particularly by Norman Fairclough and Jonathan Potter), discourse analysis goes beyond content to analyze language use as a social practice that constitutes and reflects power relations, ideologies, and social structures.