Reliability of verbal-numerical working memory tasks
Reliability of verbal-numerical working memory tasks
复制标题
DOI：
10.1016/j.paid.2007.01.011
复制
发表时间：
2007-09-01
影响因子：
4.3
通讯作者：
Kuhn, Joerg-Tobias
中科院分区：
文献类型：
--
作者：
Beckmann, Barbara;Holling, Heinz;Kuhn, Joerg-Tobias
大量的研究表明，工作记忆容量和智力测量之间存在着实质性的相关性。相比之下，专注于工作记忆任务的重测信度和其他心理测量学特性的研究并不常见，并且提供了混合的结果。因此，本研究的目的是进一步探讨四个动词-数字工作记忆任务的重测信度和可测量性。这些任务对N = 70名学生进行了两次管理，测试尝试之间间隔4.5-6个月。单个任务的重测信度在0.69到0.77之间。探索性因素分析显示，在第一次测试尝试的单一因素，但在第二次测试尝试的两个方法特定的因素，可能表明任务相关的实践效果。基于项目反应理论的信度分析表明，任务信度既取决于被试的工作记忆容量，也取决于练习效果。结果进行了讨论，根据其他研究调查工作记忆任务的心理特性。(c)2007爱思唯尔有限公司保留所有权利。
A large body of research has shown substantial correlations between working memory capacity and measures of intelligence. In contrast, studies focusing on test-retest reliability and other psychometric properties of working memory tasks have been less common and provided mixed results. The purpose of the present study therefore was to further explore the test-retest reliability and scalability of four verbal-numerical working memory tasks. The tasks were administered twice to N = 70 students with 4.5-6 months between testing attempts. Test-retest reliabilities of single tasks ranged from .69 to .77. Exploratory factor analyses revealed a single factor at the first testing attempt, but two method-specific factors at the second testing attempt, possibly indicating a task-related practice effect. Reliability analyses based on item response theory revealed that task reliability depended both on subjects' working memory capacity and practice effects. Results are discussed in light of other research investigating psychometric properties of working memory tasks. (c) 2007 Elsevier Ltd. All rights reserved.