Hi,

For moderation analysis, you can use the PROCESS macro for SPSS or SAS, it is very easy to use.

Hallo! Thank you for your answer. I've tried that, but unfortunately PROCESS computes only 1 IV and only 1 DV. But for other moderator & mediation analyses, PROCESS is really good.

Dear Aurita Zega

Regarding the model you describing, I have some concerns regarding the identification of the model. However, about how can you model moderation and the multiple regression, well, there are multiple software that is capable to handle this such as R software, AMOS and if you are applying partial least square structural equation modelling shortly known as (PLS-SEM) then you can also use SmartPLS.

If you say what software you use, people will be better able to advise you.

You should also clarify what you want to do about having 3 outcome variables. Specifically, do you want to estimate one multivariate model or three separate univariate models? The classic article by Huberty & Morris (1989) has a nice discussion of this issue. Take a look at it if you have never read it. HTH.

Article Multivariate Analysis Versus Multiple Univariate Analyses

Brian O'Connor at UBC (Canada) offers programs that cover a lot of the waterfront in moderated multiple regression. They're available at

https://people.ok.ubc.ca/brioconn/simple/simple.html

Bruce Weaver , I use at the moment spss, but I am ready to use another program. Actually I want to estimate one multivariate model.

Thanks for your answers, Belal Edries & Paul Max Kohn .

To estimate one multivariate model, look at the GLM MULTIVARIATE command.

• https://www.ibm.com/support/knowledgecenter/en/SSLVMB_26.0.0/statistics_mainhelp_ddita/spss/advanced/idh_glm_multivariate.html

@ Paul Max Kohn , thanks for your tipps. Unfortunately the programs are only for 1-2 IVs or DVs.