手法を比較

	Qの方法論	因子分析	レパートリー・グリッド法
分野	心理学	研究統計	心理学
系統	Hypothesis test	Process / pipeline	Hypothesis test
提唱年	1935	1931	1955
提唱者	William Stephenson	Louis Leon Thurstone	George Kelly
種類	Q-sort ranking technique	Method	Qualitative-quantitative hybrid
原典	Stephenson, W. (1935). Technique of factor analysis. Nature, 136(3434), 297.	Thurstone, L. L. (1947). Multiple Factor Analysis. University of Chicago Press.	Kelly, G. A. (1955). The psychology of personal constructs. Norton.
別名	Q-Sort, Q-Technique	EFA, CFA, latent variable modeling	Rep Grid, Repertory Grid Test, Kelly Grid
関連	3	3	1
概要	Q-Methodology is a mixed-methods approach that combines quantitative factor analysis with qualitative interpretation to identify distinct perspectives, viewpoints, or 'factors' shared by groups of people. Introduced by William Stephenson in 1935, it uses Q-sorts—where participants rank statements on a continuum—to measure subjective viewpoints systematically. The method applies factor analysis to correlations among Q-sorts (not items), revealing common patterns of opinion or attitude that transcend individual differences.	Factor analysis is a statistical technique for identifying latent (unobserved) dimensions underlying observed variables, developed by Louis Leon Thurstone in the 1930s and formalized by Jöreskog (1969). Exploratory factor analysis (EFA) discovers unknown factor structure from data; confirmatory factor analysis (CFA) tests hypothesized relationships between observed and latent variables. Essential in psychometrics (test development), organizational research (measuring constructs like leadership style), and biomedicine (identifying disease subtypes), factor analysis reduces dimensionality while revealing conceptual organization in multivariate data.	The Repertory Grid is a qualitative-quantitative method derived from Personal Construct Theory that elicits how individuals construe (interpret and evaluate) a domain of interest—people, concepts, events, or objects—through their own idiosyncratic dimensions or 'constructs.' Introduced by George Kelly in 1955, the method generates a grid of elements (e.g., people) rated along personally meaningful bipolar constructs, revealing cognitive structures, values, and reasoning patterns without imposing researcher-defined categories.