文章基本信息

标题：ECAT-LISTENING: DESIGN AND PSYCHOMETRIC PROPERTIES OF A COMPUTERIZED ADAPTIVE TEST ON ENGLISH LISTENING
本地全文：下载
作者：Julio Olea ; Francisco José Abad ; Vicente Ponsoda 等
期刊名称：Psicothema
印刷版ISSN：0214-9915
电子版ISSN：1886-144X
出版年度：2011
卷号：23
期号：4
页码：802-807
出版社：Cologio Oficial de Psicólogos del Principado
摘要：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.