What this suggests is that the oft touted connection between altruistic behavior and intelligence may have a root in self preservation. Intelligent people are much more capable of serious undetected dishonesty and so have to make obvious sacrifices against violence, crime, impoliteness, etc. to make up for it.
Wei Dai makes a case for cleverness being an disadvantage in some non-zero-sum games: Link
What this suggests is that the oft touted connection between altruistic behavior and intelligence may have a root in self preservation. Intelligent people are much more capable of serious undetected dishonesty and so have to make obvious sacrifices against violence, crime, impoliteness, etc. to make up for it.