Medium
Multiple Linear Regression
SPSS
Free
A researcher tests whether the relationship between stress (X) and burnout (Y) depends on social support (W). They mean-center stress and support, then add the interaction term (stress × support) to a multiple regression. In SPSS, the interaction term has B = -0.50, p = .02. Which conclusion is most appropriate?
A
There is evidence of moderation: as social support increases, the positive relationship between stress and burnout becomes weaker.
B
There is mediation: social support explains why stress leads to burnout.
C
Because predictors were mean-centered, the negative B means stress reduces burnout at all levels of support.
D
The interaction coefficient is not interpretable unless stress and support are standardized (z-scored), not mean-centered.