So sánh phương pháp

	Alpha Cronbach đa nhóm	Phân tích độ tin cậy đa nhóm
Lĩnh vực	Trắc lượng tâm lý	Trắc lượng tâm lý
Họ	Latent structure	Latent structure
Năm ra đời	1951 (alpha); multi-group application from 1980s onward	1990s–2000s
Người khởi xướng	Lee J. Cronbach (alpha); multi-group extension in cross-cultural and measurement invariance research	Classical test theory traditions; synthesized in modern practice by Vandenberg & Lance (2000) and Sijtsma (2009)
Loại	Reliability / internal consistency comparison	Reliability estimation and comparison
Công trình gốc	Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334.	Vandenberg, R. J. & Lance, C. E. (2000). A review and synthesis of the measurement invariance literature: Suggestions, practices, and recommendations for organizational research. Organizational Research Methods, 3(1), 4–70.
Tên gọi khác	group-stratified alpha, cross-group alpha comparison, subgroup internal consistency, MG-alpha	reliability comparison across groups, group-specific reliability estimation, multi-sample reliability analysis, cross-group internal consistency
Liên quan	4	4
Tóm tắt	Multi-group Cronbach's alpha estimates and compares the internal consistency reliability of a scale separately within each of two or more defined subgroups. It is used in cross-cultural, demographic, and comparative psychometric research to establish that a scale measures its construct with equivalent precision across groups before making cross-group comparisons.	Multi-group reliability analysis estimates internal consistency or stability coefficients separately within each group and then formally compares them to determine whether a scale functions with equal precision across populations. It is a foundational step in cross-group measurement research, typically carried out alongside or prior to measurement invariance testing.