11. Hayes Process Macro SPSS | Model 9 - Multiple Paths for Moderated Mediation
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Model 9 can test multiple parallel mediators with multiple moderators that may alter indirect effects.
Briefing
Hayes Process Macro Model 9 is used to test a multiple-moderated mediation setup where two moderators may change the strength of two indirect pathways from an independent variable to an outcome through parallel mediators. In this example, collaborative culture predicts organizational performance through organizational commitment and organizational learning, while role ambiguity and role conflict are examined as moderators of the indirect effects.
The analysis first checks the moderated mediation “front end”: whether the moderators alter the relationship between collaborative culture (X) and each mediator. For organizational commitment (M1), collaborative culture has a significant positive effect (p < .05). Role ambiguity also significantly affects organizational commitment (p < .05), while role conflict does not. Crucially, the interaction between collaborative culture and role ambiguity (CC × role ambiguity) is significant (p < .05), meaning role ambiguity moderates how collaborative culture translates into organizational commitment. By contrast, the interaction between collaborative culture and role conflict (CC × role conflict) is insignificant, so role conflict does not moderate that specific link.
For organizational learning (M2), collaborative culture significantly predicts organizational learning, and role conflict significantly affects organizational learning. Role ambiguity does not. However, neither interaction term—CC × role ambiguity or CC × role conflict—is significant. That means neither role ambiguity nor role conflict changes the strength of the collaborative culture → organizational learning relationship. With the mediators in place, organizational performance (Y) is then tested as the outcome: organizational commitment significantly predicts organizational performance, while organizational learning does not. The direct effect of collaborative culture on organizational performance, in the presence of the mediators, is also significant.
Next comes the mediation and moderated mediation “back end.” At average levels of the moderators, the indirect effect from collaborative culture to organizational performance through organizational commitment is significant, indicating mediation. Because the direct effect remains significant, the mediation is classified as partial mediation. The key question then becomes whether the indirect effect itself varies across moderator levels. Using the index of moderated mediation, role ambiguity significantly moderates the indirect effect through organizational commitment (the confidence interval does not include zero), while role conflict does not. In practical terms, the pathway “collaborative culture → organizational commitment → organizational performance” changes in strength depending on role ambiguity, but not depending on role conflict.
For the second pathway through organizational learning, the indirect effect is not significant at average moderator values, so organizational learning does not mediate the collaborative culture → organizational performance relationship. Correspondingly, moderated mediation is also not supported for this pathway: neither role ambiguity nor role conflict shows a significant index of moderated mediation, with confidence intervals indicating no effect. Overall, Model 9 results point to a single moderated indirect pathway—collaborative culture’s influence on performance via organizational commitment—conditioned by role ambiguity, while the parallel pathway via organizational learning remains inactive.
Cornell Notes
Hayes Process Macro Model 9 tests whether two moderators (role ambiguity, role conflict) change the size of indirect effects from collaborative culture to organizational performance through two parallel mediators (organizational commitment and organizational learning). Collaborative culture significantly predicts both mediators, but only role ambiguity moderates the collaborative culture → organizational commitment link (CC × role ambiguity significant; CC × role conflict not). Organizational commitment significantly predicts organizational performance, while organizational learning does not. The indirect effect through organizational commitment is significant (partial mediation because the direct effect remains significant), and the index of moderated mediation shows role ambiguity significantly moderates that indirect effect, whereas role conflict does not. No mediation or moderated mediation is found for the organizational learning pathway.
Which moderator actually changes the collaborative culture → organizational commitment relationship, and how is that determined?
Why is the mediation through organizational commitment labeled “partial” rather than “full”?
How do the results for organizational learning differ from organizational commitment in the mediation model?
What does the index of moderated mediation reveal about role ambiguity versus role conflict?
When is it appropriate to probe interaction effects with slope analysis in this workflow?
Review Questions
- In this Model 9 setup, which specific interaction term(s) were significant, and what path did each interaction correspond to?
- What statistical evidence distinguishes partial mediation from full mediation in the organizational commitment pathway?
- Why does the organizational learning pathway fail to produce moderated mediation even though role conflict affects organizational learning?
Key Points
- 1
Model 9 can test multiple parallel mediators with multiple moderators that may alter indirect effects.
- 2
Role ambiguity significantly moderates the path from collaborative culture to organizational commitment (CC × role ambiguity significant), while role conflict does not (CC × role conflict insignificant).
- 3
Organizational commitment predicts organizational performance, but organizational learning does not, which determines which indirect pathways can matter.
- 4
The indirect effect from collaborative culture to organizational performance via organizational commitment is significant, and the direct effect remains significant, so mediation is partial.
- 5
The index of moderated mediation shows role ambiguity significantly moderates the indirect effect through organizational commitment, while role conflict does not.
- 6
No mediation or moderated mediation is supported for the organizational learning pathway because the indirect effect and the moderated mediation indices are insignificant.