Due to increased empirical interest in narcissism across social sciences, there is a need for inventories that can be … administered quickly while also reliably measuring both the agentic and antagonistic aspects of grandiose narcissism. In this study … as data from a large representative sample (total N = 4,433) that included responses to other narcissism measures as well …

years of emerging adulthood (ages 18-25) are inversely related to adult narcissism. Fletcher (2015) called into question the … robustness of the results and Grijalva et al. (2015) presented meta-analytic support for real gender differences in narcissism … adulthood indeed tempers later narcissism - but only in men. …