Authors * Mannix Chan, Gilad FeldmanPlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"
Abstract * <p>Individuals who donate to charity may be affected by various biases and donate inefficiently. In a replication and extension Registered Report with a US Amazon Mechanical Turk sample using CloudResearch (N = 1403), we replicated Studies 1 to 4 in Baron and Szymanska (2011) with extensions on reputation and overhead funding. We found support for the effects of a preference for lower perceived waste (d = 0.70, 95% CI [0.41, 0.99]), lower past costs (d = 0.59, 95% CI [0.16, 1.02]), for the ingroup (d = 0.52, 95% CI [0.47, 0.58]), for having some diversification between charities (d = 0.63, 95% CI [0.47, 0.78] for single projects; d = 1.18, 95% CI [1.00, 1.36] for several projects versus one), and against forced charity (d = 0.29, 95% CI [0.21, 0.37]; nominally replicated, but has caveats regarding validity); as at least four of our five hypotheses were found to replicate, we conclude this as being a successful replication. Extending the replication, we found support for an unexpected preference for anonymity on donation allocation (opposite to our predictions; d = 0.54, 95% CI [0.46, 0.61]), and support for a preference towards paid-for overhead costs on donation allocation (d = 0.60, 95% CI [0.52, 0.68]). We discuss the implications and validity of these findings. All materials, data, and code were made available on: https://osf.io/bep78/.</p>
Keywords (optional) effective altruism, heuristics, utilitarianism, donations, efficacy, charity, cognitive biases, registered report, replication
