I want to research about the relationship between

**Corporate Governance (X1)**(consists of many proxies, but are turned into a score, using factor analysis) which is a continuous IV and

**Financial distress (Y)**, which is categorical binary DV (1 is for financially distressed firms, 0 is otherwise) and use a third variable, which is

**Intellectual Capital Score (Z)**, a continuous variable as a moderation/interaction variable in order to know whether Intellectual Capital strengthen this relationship or not.

I am told to do a Logistic Regression, but I don't know how to do it if I want to add a moderation/interaction variable into it.

Also, should I include a preliminary test, such as normality test or goodness-of-fit test? If so, which test that I would require to run?

I'm using SPSS.

Thank you!