A caveat: the findings of Piff's research are applicable only to his research subjects, who are likely Berkeley undergraduates at the Social Interaction Lab. Findings in psychological experiments don't carry across cultures. See 'The Weirdest People in the World?' for more:
That said, other researchers conducting Ultimatum Game and Dictator Game experiments have found that higher-status individuals offer less to their counterparts, even when the 'status' is entirely make-believe (for instance, being told that they scored higher than their counterpart on a previously-conducted test of skill - even though they were in fact randomly assigned to their roles.) Researchers have also found that in Ultimatum Game experiments, lower-status individuals were willing to accept less, even when the low status was similarly make-believe.
In other words, Piff is making a somewhat politicized argument about wealth and 'the rich', when he should be talking about status. I'd argue that all this experiment shows is that American college undergraduates have internalized that high status is deserved, and therefore it's fair for high status people to retain a greater proportion of the benefits of status.
http://www2.psych.ubc.ca/~henrich/pdfs/WeirdPeople.pdf
That said, other researchers conducting Ultimatum Game and Dictator Game experiments have found that higher-status individuals offer less to their counterparts, even when the 'status' is entirely make-believe (for instance, being told that they scored higher than their counterpart on a previously-conducted test of skill - even though they were in fact randomly assigned to their roles.) Researchers have also found that in Ultimatum Game experiments, lower-status individuals were willing to accept less, even when the low status was similarly make-believe.
In other words, Piff is making a somewhat politicized argument about wealth and 'the rich', when he should be talking about status. I'd argue that all this experiment shows is that American college undergraduates have internalized that high status is deserved, and therefore it's fair for high status people to retain a greater proportion of the benefits of status.