เปรียบเทียบวิธี

	การวิเคราะห์องค์ประกอบเชิงสำรวจสำหรับการพัฒนามาตรวัด (EFA)	สัมประสิทธิ์อัลฟาของครอนบาค (การวิเคราะห์ความเชื่อมั่น)	การวิเคราะห์ปัจจัยเชิงสำรวจ (Exploratory Factor Analysis, EFA)
สาขาวิชา	การวัดทางจิตวิทยา	สถิติศาสตร์	สถิติศาสตร์
ตระกูล	Latent structure	Latent structure	Latent structure
ปีกำเนิด	1904 (foundational); contemporary scale-development practice from 1990s onward	1951	—
ผู้ริเริ่ม	Primarily Spearman (1904); psychometric scale application formalised by Thurstone (1930s)	Lee J. Cronbach	—
ประเภท	Latent variable / dimension reduction	Reliability / internal consistency coefficient	Latent variable / dimension reduction
แหล่งต้นตำรับ	Costello, A. B. & Osborne, J. W. (2005). Best practices in exploratory factor analysis: Four recommendations for getting the most from your analysis. Practical Assessment, Research & Evaluation, 10(7), 1–9.	Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334.	Fabrigar, L. R., Wegener, D. T., MacCallum, R. C. & Strahan, E. J. (1999). Evaluating the use of exploratory factor analysis in psychological research. Psychological Methods, 4(3), 272–299.
ชื่อเรียกอื่น	Açımlayıcı Faktör Analizi — Ölçek Geliştirme (EFA), psychometric EFA, scale construction factor analysis	coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha)	common factor analysis, açımlayıcı faktör analizi, factor analysis
ที่เกี่ยวข้อง	5	4	4
สรุป	Exploratory Factor Analysis for Scale Development is the psychometric application of EFA in which an item pool is administered and the resulting response data are analysed to discover the latent factor structure underlying the items. Originating with Spearman's (1904) factor theory and formalised for applied scale construction by Costello and Osborne (2005) and Fabrigar and colleagues (1999), this variant imposes a stricter sample requirement (n ≥ 100, subject-to-item ratio ≥ 5) and a higher loading threshold (≥ 0.40) than general EFA, and it treats the recovered factor structure as a draft to be subsequently validated by confirmatory analysis.	Cronbach's alpha is a coefficient of internal consistency that quantifies the degree to which a set of items on a scale measures the same underlying construct. Introduced by Lee J. Cronbach in 1951, it remains the most widely reported reliability index in social-science, health, and educational research.	Exploratory factor analysis reduces a large set of observed variables into a smaller number of latent common factors. It is widely used in scale development and psychometrics to uncover the dimensional structure that underlies a set of correlated items, without specifying that structure in advance.