求助——某个潜变量只有两个观测变量的问题

我也不清楚有两个观测变量的潜变量还做不做效度分析，同问中。。。

遇到类似问题了，AMOS中，一个潜变量只有两个观测变量可不可以，还用做KMO值效度分析吗，或者还有其他方法做效度分析吗?大侠，快帮忙解答一下啦！

"Condition B: Sufficient Number of Indicators per Construct
For each of the constructs in the model, at least one of the following three conditions must hold:

1. The construct has at least three indicators whose errors are uncorrelated with each other.
2. The construct has at least two indicators whose errors are uncorrelated and either

a. both the indicators of the construct correlate with a third indicator of another construct but neither of the two indicators' errors is correlated with the error of that third indicator, or b. the two indicators' loadings are set equal to each other.

3. The construct has one indicator which meets either of the following
conditions:
a. its error variance is fixed to zero or some other a priori value (e.g., the quantity one minus the reliability times the indicator's variance) or b. there is a variable that can serve as an instrumental variable (see Rule C under Identification of the Structural Model) in the structural model and the error in the indicator is not correlated with that instrumental variable."
看看这个第二条的规定就知道了，你可以用两个items但是要满足里面ab两个条件中的一个.应该能帮到你

wjd52100 发表于 2013-5-20 01:17
遇到类似问题了，AMOS中，一个潜变量只有两个观测变量可不可以，还用做KMO值效度分析吗，或者还有其他方法做 ...

请问这是哪篇文献里面的表述？我想看看，谢谢您啦！

同问，潜变量只有两个指标变量 在路径分析时 没办法算出该潜变量的标准化回归系数  该如何处理才能计算？

受教了，非常感谢

vivic19 发表于 2010-2-27 11:06
有的研究者主张每个潜在因子应该用三到四（如果可能）观测指标表示。但是多于四个指标所得到的回报会越来越 ...

请问“当因子互有关联时，可减至每因子二个，也不致出现不可识别的困难。这是测量指标数的下限。”，这个观点从哪本书或者文献里面可以找到吗？