Døskeland and Pedersen (2016)
Døskeland, Trond and Lars Jacob Tynes Pedersen. “Does the Wealth of Investors Matter? Experimental Evidence on the Weighing of Financial and Moral Arguments in Responsible Investment.” Working paper (NHH Norwegian School of Economics), 2016.
From the author's abstract: "[W]e investigate how responsible investors of different wealth weigh financial and moral arguments. We conduct a large-scale natural field experiment on responsible investment, wherein we treat investors with financial, moral and no arguments, respectively. We find that there is a statistically and economically significant difference in responsiveness to financial and moral arguments between investors of different wealth."
Link (published version): https://pubsonline.informs.org/doi/10.1287/mnsc.2015.2208