I made 3-way interaction of moderation using SmartPLS 2. The relationship between ID and LO is moderated by variables G and CS. So, the moderation formula is like this, ID + G + CS + (ID x CS) + (ID x G) + (G x CS) + (ID x CS x G). You can find my model below.

Since SmartPLS doesn't support 3-way moderation directly (I mean we have to compute it manually, for an example, using Excel), I change ID x G, ID x CS, and G x CS into variables and I manually input them into the *.csv file. The result is as follow and it seems 'good', indicated by the 'normal' path coefficients.

Moreover, I computed ID x CS x G using Excel and added it as a variable. So, the model looks like as follow.

Surprisingly, the path coefficients get wild. The values are very high. Is this condition is possible?

I then did an experiment. I changed the variables that represent ID x G, ID x CS, and G x CS, not as variables that I manually input into the *.csv file, but as the moderation effects calculated by SmartPLS. Only ID x CS x G acts as a variable. The result is as follow.

Surprisingly again, the result, specifically the path coefficients, is not equal to the previous one. Actually, when I removed the ID x CS x G variable, the path coefficients of the model that uses manually-computed multiplication variables and the model that uses SmartPLS-computed multiplication variables are

**NOT**different. They show the same values. Only when I include ID x CS x G variable, the path coefficients of the two models show different values.

**So, two questions here:**

1. Why are, in the 3-way interaction of moderation, the path coefficient values very big?

2. Why are the two models, the model that use the manually-computed multiplication variables and the model that use the SmartPLS-computed multiplication variables, different in their path coefficient values?

Thanks for the help.

Regards,

Alfa