It turns out that there is in fact some evidence linking certain personality traits with behavior in these games. Here I briefly mention three such instances where evidence has been found. Spending a moment on each of them is also worthwhile because of what we can learn more generally about the moral psychology of justice beyond what economic games tell us (for a massive meta-analysis of 60 years of research on the relationship between personality traits and behavior in six economic games, including the dictator and ultimatum games, see Thielmann et al. 2020).