手法を比較

	短縮版クロンバックのα	短縮版尺度開発
分野	心理測定学	心理測定学
系統	Latent structure	Latent structure
提唱年	1951 (alpha); short-form practice codified 1980s–2000s	1990s–2000s
提唱者	L. J. Cronbach (alpha); short-form application formalized across scale-abbreviation literature	Multiple contributors; foundational critique by Smith, McCarthy & Anderson (2000); practical guidance by Stanton et al. (2002)
種類	Internal consistency reliability coefficient	Scale development methodology
原典	Smith, G. T., McCarthy, D. M. & Anderson, K. G. (2000). On the sins of short-form development. Psychological Assessment, 12(1), 102–111.	Stanton, J. M., Sinar, E. F., Balzer, W. K., & Smith, P. C. (2002). Issues and strategies for reducing the length of self-report scales. Personnel Psychology, 55(1), 167–194.
別名	abbreviated scale alpha, brief scale internal consistency, short-scale Cronbach's alpha, reduced-item alpha	scale abbreviation, abbreviated scale development, short-scale construction, item reduction methodology
関連	4	5
概要	Short-form Cronbach's alpha quantifies the internal consistency reliability of an abbreviated version of a psychological scale. It applies Cronbach's alpha formula to a reduced item set, verifying that the shortened instrument retains sufficient reliability to support valid score interpretation in research and applied contexts.	Short-form scale development is the systematic process of reducing a full-length psychological scale to a smaller subset of items while preserving the construct validity, reliability, and measurement properties of the original instrument. It is widely used when administration burden must be minimised without sacrificing psychometric quality.