Mediation PreviousNext
Mplus Discussion > Structural Equation Modeling >
 susana barradas posted on Sunday, September 06, 2015 - 11:30 pm

Im performing a mediation analysis. I have one predictor variable (dychotomous), three mediator variables and one outcome variable.
Im not sure wich code should I use to this analysys, and also how to perform the sobel test (is there a need for a sobel test when performing mediation analysis using SEM?).

Until now, ive been using the following code:

MODEL: cAE ON contint; (mediator1 ON predictor)
cAS ON contint; (mediator2 ON predictor)
cER ON contint; (mediator3 ON predictor)
cTL ON cAE cAS cER;(outcome ON mediators)
cTL ON contint; (outcome ON predictor).

Is there anything missing in this code? What else should I take in account?

All my p-values are significant, but Im not sure if I can affirm that I prooved the mediation model just like that.

Many thanks for your help!

 Linda K. Muthen posted on Monday, September 07, 2015 - 5:48 pm
A good source for mediation is the 2013 Hayes book. Mediation usually involves looking at indirect effects. See Example 3.16 in the user's guide. I would recommend CINTERVAL (BCBOOTSTRAP) instead of CINTERVAL which is shown in this example. For further information, you can look up these options in the user's guide.
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