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Category: Project

Description: There is growing interest in understanding the fluctuations in narcissistic grandiosity and vulnerability over time. Momentary data collection is vital in facilitating this new area of inquiry. Two narcissism adjective scales, the Narcissistic Grandiosity Scale and the Narcissistic Vulnerability Scale, have recently been developed for this purpose. In the present study, the validity of these two scales was examined across three different samples. Results indicate that these measures perform well psychometrically at both the momentary and trait-level. In particular, results from the multilevel exploratory factor analyses reveal a clear two-factor structure at both the within- and between-person level. Additional results examining the relationship between these scales and other momentary scales (e.g., the Positive and Negative Affect Schedule) reflect associations in line with contemporary literature. Finally, both of these scales tended to correlate with other dispositional measures at the between-person level in the expected manner, with particularly strong associations with existing narcissism measures (e.g., The Pathological Narcissism Inventory and The Five Factor Narcissism Inventory). Future studies wishing to examine fluctuations in grandiosity and vulnerability should consider using these scales for momentary narcissism assessment.