“…Although Eckel and Grossman (1996) initially developed the "real-donation" experiment to measure altruism, scholars from various disciplinary backgrounds have begun implementing similar techniques to examine other topics. To date, these topics have included private charitable giving (Charness et al, 2018;Eckel et al, 2018;Jones, 2017;Umer, 2020); pro-social behavior (Butz & Harbring, 2020;Happ et al, 2015); pro-environmental behavior (Clements et al, 2015); political ideology (Haas & Morton, 2018;van Esch et al, 2021); spiteful pleasure (Luccasen & Grossman, 2016); children's giving and moral reasoning (Ongley et al, 2014); support for diversification in policing (Peyton et al, 2022); policies to address racial discrimination (Haaland & Roth, 2023); and voluntary giving to government agencies 9 (Jones, 2017;Li et al, 2011Li et al, , 2015López-Pérez, et al, 2024;Luccasen & Thomas, 2020). As the number of scholars utilizing this method has expanded, so has the number of variations of the donation task.…”