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	多変量因果比較研究	判別分析
分野	研究デザイン	統計学
系統	Process / pipeline	Latent structure
提唱年	Mid-20th century onward; multivariate extension systematized 1970s–1990s	1936
提唱者	Extension of causal-comparative tradition (cf. Chapin, 1947; Gay, Mills & Airasian)	Ronald A. Fisher
種類	Quantitative non-experimental comparative design	Supervised classification and dimension reduction
原典	Fraenkel, J. R., Wallen, N. E., & Hyun, H. H. (2019). How to Design and Evaluate Research in Education (10th ed.). McGraw-Hill. ISBN: 978-1260085594	Fisher, R. A. (1936). The use of multiple measurements in taxonomic problems. Annals of Eugenics, 7(2), 179–188.
別名	multivariate causal-comparative design, MANOVA causal-comparative study, multi-outcome ex post facto research, multivariate ex post facto design	LDA, Fisher discriminant analysis, discriminant function analysis, canonical discriminant analysis
関連	6	4
概要	Multivariate causal-comparative research is a quantitative, non-experimental design that investigates whether pre-existing group differences (defined by a naturally occurring categorical variable) are associated with differences across multiple outcome variables considered simultaneously. By extending the classic causal-comparative framework to several dependent variables at once, it reduces Type I error inflation and captures the correlated structure of outcomes that univariate comparisons would miss.	Discriminant analysis finds linear combinations of predictor variables that best separate two or more known groups. It is used both to understand which predictors distinguish the groups and to classify new observations into those groups with minimum error.