I have a similar problem as above, but my model is a cross-lagged panel model with 8 time-points and I am trying to get the total effect of X at times 1-7 on Y at t=8 (the last one). The cross-lags and autoregression only have one lag, but there are hundreds of indirect effects - too many to specify easily using Model Constraint. Is there any way of doing this using the Model Indirect command? I would also, in the next step, want to calculate the difference in this total effect between two groups (I am using latent class analysis with known classes, using Estimator = Bayes).
Sorry for being unclear, but my problem is that I don't know if what I want to do can be done at all. I would like to add the total indirect effects of X1 -> Y8, X2 -> Y8, X3 -> Y8, X4 -> Y8, X5 -> Y8, and X6 -> Y8, plus the direct effect of X7 -> Y8, to get the total effect of X on Y8. As far as I know it is only possible to calculate these separately using the Model Indirect, i.e:
Model Indirect: Y8 IND X1; Y8 IND X2; Y8 IND X3; etc.
If I instead were to use Model Constraint, I would need to specify each and every indirect path which would take a lot of time and space, plus the risk of missing some of them.
Cheng posted on Monday, October 05, 2020 - 1:32 am
There is a reciprocal relationship in my SEM model. When I use Model Indirect command, Mplus output only provides Total, Total indirect. However, it doesn't provide Specific indirect and Direct effect. Is there any reason for this?