给位大佬好,本人是mplus新手,在做潜增长曲线模型,我在测量一个变量在三个时间点上的变化过程中出现了以下问题:THE MODEL ESTIMATION TERMINATED NORMALLY
WARNING: THE LATENT VARIABLE COVARIANCE MATRIX (PSI) IS NOT POSITIVE
DEFINITE. THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR A
LATENT VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO LATENT
VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO LATENT VARIABLES.
CHECK THE TECH4 OUTPUT FOR MORE INFORMATION.
PROBLEM INVOLVING VARIABLE I.
我在此之前对这三个时间点的数据做了测量不变性检测发现模型效果是可以接受的,这个一直提示潜在变量协方差矩阵不是正定的,不知道该怎么解决,求各位大佬能指导以下,非常感谢!!!


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