查阅有关中介效应检验的资料，应用Sobel检验。

你应该测的是A到B的系数乘以B到C的系数后的显著性。Sobel 假定乘积后的系数成正太分布，所以现在已经没有用了。用bootstrap是现在广泛接受的方法。

感谢你们的回答，我有尝试着内建bootstrap
但是为什么我用bootstrap方法，提示出错呢？during the analysis of a bootstrap sample,an attempt was made to compute the correlation between two variables,one of whose estimated variances failed to be positive.This attempt was made because "Standardized estimates"in the "Analysis Properties"window was checked,or because the Standardized method was used.

另外是不是三条路径系数都要显著才能谈中介效应（A到B路径系数显著，从B到C路径系数显著，而A到C路径系数不显著的话，是不是就只能说是间接效应？）谢谢

用AMOS 可以做Sobel检验吗 求高手解答