The Performance of the Polychoric Correlation Coefficient and Selected Fitting Functions in Confirmatory Factor Analysis with Ordinal Data
模拟研究发现，多分格相关系数与LISREL 7拟合函数的组合均无法产生无偏的标准误估计或正确的卡方分布，但五种拟合函数在有序数据分析中表现差异显著。
In a simulation study, no combination of the polychoric correlation coefficient with any LISREL 7 fitting function produced unbiased estimated standard errors or a correctly distributed chi square statistic. However, there were major differences in the performance of the five fitting functions in the analysis of ordinal data.