The authors discuss how deep integration shaped their interdisciplinary collaboration and the creation of their STRIVE-4 Model of traits to guide their own and possibly others’ empirical research on virtue. As they note, the criterion of psychological realism was a constant influence on their theorizing, and was especially evident in the incorporation of the ideas that virtue traits (1) come in degrees (i.e., they are scalar), (2) are role-sensitive, and (3) interact with situational factors. They conclude that virtue research has been fruitful in ways that are not possible when working with the resources of either philosophy or psychology independently, and that conceptual and empirical results have added depth and nuance to the field that builds on decades of scholarship in both disciplines.