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| Mô hình IRT Logistic hai tham số (2PL)× | Phân tích nhân tố khẳng định (Confirmatory Factor Analysis - CFA)× | |
|---|---|---|
| Lĩnh vực | Trắc lượng tâm lý | Trắc lượng tâm lý |
| Họ | Latent structure | Latent structure |
| Năm ra đời≠ | 1980 | 1969 |
| Người khởi xướng≠ | Frederic M. Lord | Karl Gustav Jöreskog |
| Loại≠ | Item response model / latent trait model | Hypothesis-testing latent variable model |
| Công trình gốc≠ | Lord, F. M. (1980). Applications of Item Response Theory to Practical Testing Problems. Erlbaum. link ↗ | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| Tên gọi khác≠ | two-parameter logistic model, 2PL model, 2PL IRT — İki Parametreli Madde Tepki Modeli | CFA, confirmatory FA, measurement model, restricted factor analysis |
| Liên quan≠ | 6 | 4 |
| Tóm tắt≠ | The two-parameter logistic item response model, formalised by Frederic Lord (1980), describes the probability that a respondent answers a binary test item correctly as a smooth S-shaped function of the respondent's latent ability. By estimating a separate discrimination parameter for each item alongside a difficulty parameter, 2PL allows items to differ in how sharply they distinguish high- from low-ability respondents — making it the standard model for large-scale educational and psychological assessments. | 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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