'Grandiose' narcissists post photos of their progress toward health and fitness goals

2016 study published in the journal Social Networking recruited Instagram users under age 26 and had them complete the Five Factor Narcissism Inventory.

Results showed that "grandiose" narcissists — who are typically extroverted and attention-seeking — are more likely to post photos emphasizing their physical appearance. Specifically, they post photos highlighting their progress toward health and fitness goals.

[Photo via @khloekardashian]

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