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中文摘要：
有两种方法可以估计多维测验合成信度的置信区间：Bootstrap法和Delta法.本文用模拟研究比较这两种方法,结果发现,Delta法与Bootstrap法得到结果的差异很小.因为Bootstrap法得到的是实证结果,通常被认为是真值的反映,而Delta法比Bootstrap法简单得多,所以可以用Delta法估计合成信度的置信区间.举例演示如何计算多维测验的合成信度以及用Delta法计算其置信区间.
英文摘要：
There are two methods to estimate the confidence interval of composite reliability of a multidimensional test ： Bootstrap method and Delta method. A simulation study was conducted to compare these two methods. The simulation results indicated that the difference between the standard errors obtained by Delta method and Bootstrap method was ignorable. Because the result from Bootstrap method can be treated as the true value, whereas Delta method is much simpler than Bootstrap method, we recommended that Delta method could be adopted to estimate the confidence interval of composite reliability of a multidimensional test. An example of a multidimensional test was used to illustrate how to calculate composite reliability and its confidence interval by using Delta method.
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