Advancing alpha: Measuring reliability with confidence
Advancing alpha: Measuring reliability with confidence
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DOI：
10.1207/s15327663jcp1304_14
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发表时间：
2003-01-01
影响因子：
4.8
通讯作者：
Duhachek, A
中科院分区：
文献类型：
--
作者：
Iacobucci, D;Duhachek, A
在这项研究中，我们提出了Cronbach系数α的推断统计。这个可靠性指数在消费者研究中非常重要。描述了α及其置信区间的估计，并通过分析演示说明了其组成部分对这些统计量的影响，包括项目数，项目相关性和样本量。SAS和SPSS程序可轻松实现。我们的结论是，每次研究人员报告系数α时，α的置信区间应该伴随着α估计。
In this research, we present the inferential statistics for Cronbach's coefficient alpha. This index of reliability is extremely important in consumer research. The estimation of alpha and its confidence intervals are described and an analytical demonstration illustrates the effects on these statistics of their components, including the number of items, the item intercorrelations, and sample size. SAS and SPSS programs are offered for easy implementation. We conclude with a prescription that every time a researcher reports a coefficient alpha, the confidence interval for alpha should accompany the alpha estimate.