The cost of giving: Examining the relationship between narcissistic, self-sacrificing, and empathetic traits on effortful versus effortless prosocial behavior Publication date: February 2023 Source: Journal of Research in Personality, Volume 102 Author(s): Maggie W. Harris, Kaileigh A. Byrne, Yizhou Liu, Reza Ghaiumy Anaraky Read the full article ›