手法を比較

	リッカート尺度構成法	尺度開発のための因子分析
分野	心理測定学	心理測定学
系統	Process / pipeline	Process / pipeline
提唱年	1932	1947
提唱者	Rensis Likert	Louis Thurstone
種類	Summated rating scale methodology	Exploratory factor analysis methodology
原典	Likert, R. (1932). A technique for the measurement of attitudes. Archives of Psychology, 22(140), 1-55.	Thurstone, L. L. (1947). Multiple-Factor Analysis: A Development and Expansion of the Vectors of Mind (2nd ed.). Chicago: University of Chicago Press. ISBN: 9780226797557
別名	Likert summated rating scale, Summated rating scale construction	Exploratory factor analysis, EFA for scale development, Factorial structure analysis
関連	5	5
概要	Likert scale construction is a systematic methodology for developing attitude measurement instruments using summated rating scales. Introduced by Rensis Likert in 1932, it enables researchers to quantify latent constructs such as attitudes, beliefs, and psychological states by aggregating responses across multiple items. The method remains foundational to quantitative social and health sciences research.	Exploratory factor analysis (EFA) is a statistical method for discovering the underlying dimensional structure of a set of items or variables. Pioneered by Louis Thurstone in the mid-20th century, EFA is widely used to develop and validate psychometric scales by identifying groups of items that correlate together, thereby revealing latent dimensions of the construct being measured. The method reduces item sets to a smaller number of interpretable factors.