Investigating how self-esteem moderates grandiose narcissism's interpersonal orientation.

Objective: Most previous research has treated grandiose narcissism and self-esteem as additive predictors of outcomes, but some theory and evidence suggests they may sometimes interact to predict outcomes. Unfortunately, the nature of this interaction is unclear; we suggest a framework to conceptualize the interaction and test it vis-à-vis the interpersonal circumplex framework.

Methods: Participants (N = 598; Mage  = 38.39; 327 females; 72.1% White) reported their levels of grandiose narcissism and self-esteem and completed interpersonal circumplex measures of efficacies, values, problems, and sensitivities.

Results: As self-esteem decreased, grandiose narcissism related (a) more negatively to communal efficacies and values and (b) more positively to sensitivity to others' communal behaviors. Also as self-esteem decreased, unexpectedly, grandiose narcissism related (a) more positively to agentic efficacies and problems and (b) more negatively to sensitivity to others' agentic behaviors.

Conclusions: Overall, the present findings generally support using interaction models over additive models of grandiose narcissism and self-esteem in interpersonal contexts, suggesting that grandiose narcissism becomes generally less communal, more agentic, and more interpersonally problematic as self-esteem decreases.