手法を比較

	多変量定量的内容分析	縦断的定量的内容分析
分野	研究デザイン	研究デザイン
系統	Process / pipeline	Process / pipeline
提唱年	1969–2000s	1950s onward; longitudinal application widely adopted in media research by the 1970s–1980s
提唱者	Rooted in Holsti (1969) and Neuendorf (2002); multivariate extensions developed in communication and political science research from the 1970s onward	Developed within communication and media studies; codified by Berelson (1952) and extended by Riffe, Lacy, Fico
種類	Quantitative research design	Quantitative observational research design
原典	Neuendorf, K. A. (2002). The Content Analysis Guidebook. Sage Publications. ISBN: 978-0761919773	Riffe, D., Lacy, S., Watson, B., & Fico, F. (2019). Analyzing Media Messages: Using Quantitative Content Analysis in Research (4th ed.). Routledge. ISBN: 9781138490536
別名	multivariate QCA, multivariate content analysis, MQCA, multivariate text analysis	longitudinal content analysis, repeated-measure content analysis, time-series content analysis, longitudinal QCA
関連	6	5
概要	Multivariate quantitative content analysis (MQCA) is a systematic, replicable approach to measuring multiple attributes of communication content simultaneously and examining how those attributes relate to each other or to external variables. It extends standard content analysis by applying multivariate statistical techniques — such as factor analysis, cluster analysis, regression, or MANOVA — to coded content data, enabling researchers to uncover complex patterns across many variables at once.	Longitudinal quantitative content analysis systematically codes and counts features of texts, images, or media messages gathered at two or more points in time, enabling researchers to track how content changes, how themes rise or fall in prevalence, and how media or institutional messaging responds to external events. The design merges the structured measurement logic of quantitative content analysis with the temporal tracking power of longitudinal observation.