השוואת שיטות

	ניתוח גורמים סדרתי חקרני	אלפא של קרונבך (ניתוח מהימנות)
תחום	פסיכומטריה	סטטיסטיקה
משפחה	Latent structure	Latent structure
שנת המקור	1978–1984	1951
הוגה השיטה	Bengt Muthén	Lee J. Cronbach
סוג	Latent variable / dimension reduction	Reliability / internal consistency coefficient
מקור מכונן	Flora, D. B. & Curran, P. J. (2004). An empirical evaluation of alternative methods of estimation for confirmatory factor analysis with ordinal data. Psychological Methods, 9(4), 466–491.	Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334.
כינויים	ordinal factor analysis, polychoric EFA, categorical EFA, EFA for ordinal data	coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha)
קשורות	5	4
תקציר	Ordinal exploratory factor analysis discovers latent factors underlying a set of ordinal items — typically Likert scales — by computing polychoric correlations among the items and then applying a weighted least squares estimator. It avoids the distortions that arise when continuous EFA methods are naively applied to ordered categorical responses.	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.