手法を比較

	Manifest Content Analysis	コンテンツ分析
分野	Communication	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1952	Systematised through Krippendorff's methodology work; 4th edition 2018
提唱者	Bernard Berelson; codified by Klaus Krippendorff	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research
種類	Systematic quantitative coding of explicit message content	Qualitative / mixed-method research technique
原典	Krippendorff, K. (2004). Content Analysis: An Introduction to Its Methodology (2nd ed.). Thousand Oaks, CA: Sage. ISBN: 9780761915454	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661
別名	Quantitative manifest coding, Surface-content analysis, Manifest-level content analysis, Berelson content analysis	İçerik Analizi, systematic content coding, quantitative content analysis
関連	5	5
概要	Manifest content analysis is a quantitative research technique that systematically counts the explicit, surface-level features of communication messages — words, sources, themes, images, or actors that are directly visible in the text or media artifact — according to a predefined coding scheme. Rooted in Bernard Berelson's classic definition of content analysis as the 'objective, systematic, and quantitative description of the manifest content of communication,' it is one of the foundational empirical methods of mass communication and media research.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.