Leckelt_OnlineAppendix – Supplemental material for A Longitudinal Field Investigation of Narcissism and Popularity Over Time: How Agentic and Antagonistic Aspects of Narcissism Shape the Development of Peer Relationships

Supplemental material, Leckelt_OnlineAppendix for A Longitudinal Field Investigation of Narcissism and Popularity Over Time: How Agentic and Antagonistic Aspects of Narcissism Shape the Development of Peer Relationships by Marius Leckelt, Katharina Geukes, Albrecht C. P. Küfner, Lisa M. Niemeyer, Roos Hutteman, Sarah Osterholz, Boris Egloff, Steffen Nestler and Mitja D. Back in Personality and Social Psychology Bulletin