As a specific case, counterfactual donation matches should cause you to donate more, too.
It could be the case that people’s utility functions are pretty sharp near X% of income, so that new information makes little difference. They’re probably directly valuing giving X% of income, perhaps as a personal goal. Some might think that they are spending as much as they want on themselves, and the rest should go to charity.
As a specific case, counterfactual donation matches should cause you to donate more, too.
It could be the case that people’s utility functions are pretty sharp near X% of income, so that new information makes little difference. They’re probably directly valuing giving X% of income, perhaps as a personal goal. Some might think that they are spending as much as they want on themselves, and the rest should go to charity.
https://slate.com/human-interest/2011/01/go-ahead-give-all-your-money-to-charity.html
Or maybe their utility functions just change with new information?