Suppose that we have three variables (X, Y, Z). According to past literature Y mediates the relationship between X & Z while X mediates the relationship between Y & Z. Can I analyze these interrelationships in a single SEM using a duplicate variable for either X (i.e., Xiv & X Ddv) or Y (Yiv or Ydv)?
It is possible to use the same variable twice, once as a mediator and once as an independent variable. This methodology enables a more comprehensive examination of the connections inside the model.
For Reference:
https://www.statalist.org/forums/forum/general-stata-discussion/general/1350511-testing-mediation-between-10-independent-variables-and-1-dv-with-mixed
I don't see how this is possible. If you try to draw a path diagram, you should find that it is impossible to place both X and Y as both exogenous and mediating.
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