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	順序尺度再テスト信頼性	順序尺度信頼性分析
分野	心理測定学	心理測定学
系統	Latent structure	Latent structure
提唱年	1904–1979	2007
提唱者	Multiple contributors (Spearman, Cohen, Shrout & Fleiss)	Bruno D. Zumbo and colleagues
種類	Reliability / temporal stability	Internal consistency reliability estimation
原典	Shrout, P. E., & Fleiss, J. L. (1979). Intraclass correlations: Uses in assessing rater reliability. Psychological Bulletin, 86(2), 420–428.	Zumbo, B. D., Gadermann, A. M. & Zeisser, C. (2007). Ordinal versions of coefficients alpha and theta as measures of internal consistency for Likert rating scales. Journal of Modern Applied Statistical Methods, 6(1), 21–29.
別名	rank-based test-retest reliability, ordinal temporal consistency, Spearman test-retest reliability, weighted kappa test-retest	ordinal alpha, polychoric reliability, reliability for ordinal scales, ORA
関連	2	5
概要	Ordinal test-retest reliability quantifies how consistently an ordinal measurement instrument — such as a Likert-scale questionnaire or a rating tool — ranks or scores the same participants across two separate administrations separated by a stable interval, using correlation and agreement statistics suited to ordered categorical data.	Ordinal reliability analysis estimates the internal consistency of scales whose items are measured on ordered-category (Likert-type) response formats. By basing computations on polychoric correlations rather than Pearson correlations, it corrects for the attenuation that standard Cronbach's alpha produces when responses are discrete and non-normal.