A study by Daniel A. Chapman and Brian Lickel, of the Department of Psychological and Brain Sciences, University of Massachusetts Amherst, claims that skeptics are less likely to contribute to a relief appeal for a natural disaster, if the appeal blames the disaster on climate change.
The abstract of the study;
This research examined whether framing a natural disaster as the product of climate change impacts attitudes toward disaster victims and humanitarian relief. Participants (n = 211) read an article about a famine caused by severe droughts, with one condition attributing the droughts to climate change and the other condition made no mention of climate change. All participants then responded to measures of justifications for or against providing aid, attitudes toward the possibility of donating, and climate change beliefs. As predicted, those high in climate change skepticism reported greater justifications for not helping the victims when the disaster was attributed to climate change. Additional moderated mediation analyses showed there was an indirect effect of climate change framing on attitudes toward donating through donation justifications.
It seems obvious to me why this is happening. Charity is a leap of faith – you give, because you want to help, and because you believe the person asking for your help is credible. Asking a skeptic to help victims of climate change, is a bit like asking someone to help victims of the tooth fairy. It undermines the credibility of your appeal.