“…However, across studies that rely on a common taxonomy for personality traits, namely the widely accepted five-factor model of personality (e.g., McCrae & Costa, 1999), the empirical picture has turned out somewhat inconsistent: Not one of the classical five factors was a consistent predictor of DG altruism and the modal finding for each factor across studies is actually a null-effect. Even Agreeableness -which is commonly considered the one factor out of the five-factor model that should positively predict altruistic behavior (Denissen & Penke, 2008;Ferguson et al, 2011) -could only be shown to positively predict DG altruism in some studies (e.g., Baumert, Schlösser, & Schmitt, 2014;Becker, Deckers, Falk, & Kosse, 2012;Ben-Ner, Kramer, & Levy, 2008) but not (or even negatively) in others (e.g., Ben-Ner & Kramer, 2011;Visser & Roelofs, 2011;Weitzel, Urbig, Desai, Sanders, & Acs, 2010). Of course, variation in study designs and methodological details may account for such inconsistencies, rather than the trait conceptualizations per se.…”