For my study, I'm trying to test whether a variable acts as a moderator between the relationship of two other variables. I read that I should use moderational multiple regression with an interaction effect. However, I heard you can only use it if the moderator variable has 2 categories/ is dichotomous. The way my moderator variable is measured it has 3 different categories. What can I do when my moderator has 3 categories? Is there a test for this? I can't find one (and I'm only a Bachelor student, so not extremely complicated stats would be good). Thanks!
(My possible moderator variable is coping. The scale measures 3 styles/categories of coping. I could maybe make 2 categories, "adaptive" and "maladaptive", out of it but it would be artificial and info could get lost)
(My possible moderator variable is coping. The scale measures 3 styles/categories of coping. I could maybe make 2 categories, "adaptive" and "maladaptive", out of it but it would be artificial and info could get lost)