دورية أكاديمية
Alternative Methods for Item Parameter Estimation: From CTT to IRT. Research Report. ETS RR-22-12
| العنوان: | Alternative Methods for Item Parameter Estimation: From CTT to IRT. Research Report. ETS RR-22-12 |
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| اللغة: | English |
| المؤلفون: | Guo, Hongwen, Lu, Ru, Johnson, Matthew S., McCaffrey, Dan F. |
| المصدر: | ETS Research Report Series. Dec 2022. |
| الإتاحة: | Educational Testing Service. Rosedale Road, MS19-R Princeton, NJ 08541. Tel: 609-921-9000; Fax: 609-734-5410; e-mail: RDweb@ets.org; Web site: https://www.ets.org/ |
| Peer Reviewed: | Y |
| Page Count: | 18 |
| تاريخ النشر: | 2022 |
| نوع الوثيقة: | Journal Articles Reports - Research |
| Descriptors: | Test Items, Item Response Theory, Item Analysis, Educational Assessment, Sample Size, True Scores |
| تدمد: | 2330-8516 |
| مستخلص: | It is desirable for an educational assessment to be constructed of items that can differentiate different performance levels of test takers, and thus it is important to estimate accurately the item discrimination parameters in either classical test theory or item response theory. It is particularly challenging to do so when the sample sizes are small. The current study reexamined the relationship between the biserial correlation coefficient and the discrimination parameter to investigate whether the biserial correlation coefficient estimator could be modified and whether biserial-based estimators could be used as alternate estimates of the item discrimination indices. Results show that the modified and alternative approaches work slightly better under certain circumstances (e.g., for small sample sizes or shorter tests), assuming normality of the latent ability distribution. Applications of these alternative estimators are presented in item scaling and weighted differential item functioning analyses. Recommendations and limitations are discussed for practical use of these proposed methods. |
| Abstractor: | As Provided |
| Entry Date: | 2023 |
| رقم الأكسشن: | EJ1366755 |
| قاعدة البيانات: | ERIC |
| تدمد: | 2330-8516 |
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