השוואת שיטות
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| אלפא של קרונבך (ניתוח מהימנות)× | ניתוח גורמים מאשר (CFA)× | |
|---|---|---|
| תחום≠ | סטטיסטיקה | פסיכומטריה |
| משפחה | Latent structure | Latent structure |
| שנת המקור≠ | 1951 | 1969 |
| הוגה השיטה≠ | Lee J. Cronbach | Karl Gustav Jöreskog |
| סוג≠ | Reliability / internal consistency coefficient | Hypothesis-testing latent variable model |
| מקור מכונן≠ | Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗ | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| כינויים | coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha) | CFA, confirmatory FA, measurement model, restricted factor analysis |
| קשורות | 4 | 4 |
| תקציר≠ | 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. | Confirmatory factor analysis tests a researcher-specified factor structure against observed data. Unlike exploratory approaches, the researcher decides in advance which indicators load on which latent factor, and the model is evaluated by how closely the implied covariance matrix reproduces the sample covariance matrix. CFA is central to scale validation, construct validity assessment, and measurement invariance testing. |
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