Abstract
Pursuing the line of the difference models in IRT (Thissen & Steinberg, 1986), this article proposed a new cognitive diagnostic model for graded/polytomous data based on the deterministic input, noisy, and gate (Haertel, 1989; Junker & Sijtsma, 2001), which is named the DINA model for graded data (DINA-GD). We investigated the performance of a full Bayesian estimation of the proposed model. In the simulation, the classification accuracy and item recovery for the DINA-GD model were investigated. The results indicated that the proposed model had acceptable examinees' correct attribute classification rate and item parameter recovery. In addition, a real-data example was used to illustrate the application of this new model with the graded data or polytomously scored items.
| Original language | English |
|---|---|
| Pages (from-to) | 231-252 |
| Number of pages | 22 |
| Journal | International Journal of Testing |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| State | Published - 3 Jul 2018 |
| Externally published | Yes |
Keywords
- DINA model
- cognitive diagnostic assessment
- graded response model
- item response theory
- latent response
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