Facultad de Psicología, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
Psicothema. 2011 Nov;23(4):802-7.
In this study, eCAT-Listening, a new computerized adaptive test for the evaluation of English Listening, is described. Item bank development, anchor design for data collection, and the study of the psychometric properties of the item bank and the adaptive test are described. The calibration sample comprised 1.576 participants. Good psychometric guarantees: the bank is unidimensional, the items are satisfactorily fitted to the 3-parameter logistic model, and an accurate estimation of the trait level is obtained. As validity evidence, a high correlation was obtained between the estimated trait level and a latent factor made up of the diverse criteria selected. The analysis of the trait level estimation by means of a simulation led us to fix the test length at 20 items, with a maximum exposure rate of .40.
在这项研究中，描述了一种新的计算机化自适应测试（eCAT-Listening），用于评估英语听力。介绍了项目库的开发、数据收集的锚定设计以及项目库和自适应测试的心理测量特性研究。校准样本包括 1576 名参与者。良好的心理测量保证：该库是单维的，项目与 3 参数逻辑模型拟合良好，并且可以准确估计特质水平。作为有效性证据，在估计的特质水平与由多种选定标准组成的潜在因素之间获得了高度相关性。通过模拟对特质水平估计的分析，我们确定测试长度为 20 项，最大暴露率为 0.40。
