There are certain personality traits that members of Greek Letter Organizations (e.g., sororities, fraternities) tend to possess such as extraversion and agreeableness. However, new research published in Acta Psychologica finds that members of these organizations are also more likely to possess a “dark” personality trait: narcissism. The Dark Tetrad of personality consists of antagonistic traits such as grandiose narcissism (i.e., need to reinforce grandiose sense of self), Machiavellianism (i.e., manipulativeness and cynicism), everyday sadism (i.e., enjoyment of casual acts of cruelty), and …