Hello

I recently started working with structural equation modeling. I am doing a study for which I tested a model like this:

Var1 --> var2--> var3 --> var4. All variables are latent variables and have several indicators.

Now, the R² of var3 is +-40% in this case. However, something strange happens when I test the model:

Var1 --> var2 --> var3.

In this case, although the variables BEFORE var3 remain exactly the same, the R² of var3 becomes much smaller (+-28%).

Does anyone know a possible explanation for this? I've already checked whether this is due to missings in var4 but this is not the case. I've also checked this using another software program than the one I normally use (lavaan package in R) and found the same.

Feel free to ask more info if needed. I think this is mainly conceptual though.

Thanks in advance

I recently started working with structural equation modeling. I am doing a study for which I tested a model like this:

Var1 --> var2--> var3 --> var4. All variables are latent variables and have several indicators.

Now, the R² of var3 is +-40% in this case. However, something strange happens when I test the model:

Var1 --> var2 --> var3.

In this case, although the variables BEFORE var3 remain exactly the same, the R² of var3 becomes much smaller (+-28%).

Does anyone know a possible explanation for this? I've already checked whether this is due to missings in var4 but this is not the case. I've also checked this using another software program than the one I normally use (lavaan package in R) and found the same.

Feel free to ask more info if needed. I think this is mainly conceptual though.

Thanks in advance

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