So sánh phương pháp

	Alpha Cronbach đa nhóm	Kiểm định tính bất biến của phép đo 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	1971–1993
Người khởi xướng	Lee J. Cronbach (alpha); multi-group extension in cross-cultural and measurement invariance research	Jöreskog, K. G. (1971); Meredith, W. (1993)
Loại	Reliability / internal consistency comparison	Model comparison / hypothesis testing
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	measurement invariance, factorial invariance, cross-group invariance, MI testing
Liên quan	4	6
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 measurement invariance testing examines whether a latent construct is measured in the same way across two or more distinct groups — such as cultures, genders, or age cohorts. It is a prerequisite for meaningful group comparisons of latent means or relationships, ensuring that observed score differences reflect true differences rather than measurement artifacts.