Do people give more if they are reminded of the social norm to give? Several experiments among students show that explicit reminders with texts such as “Do the right thing” lead to more cooperation in social dilemmas (Dal Bó & Dal Bó, 2014; Capraro & Vanzo, 2019). There is also evidence that moral norms in crowdfunding campaigns can lead to more giving behavior (Capraro & Vanzo, 2019; Van Teunenbroek, Bekkers & Beersma, 2021).
We tested the effect of a moral appeal among a large sample of respondents (n = 1,196) in the 2019 wave of the Giving in the Netherlands Panel Survey (Bekkers, Boonstoppel, De Wit, Van Teunenbroek, & Fraai, 2022). After completing the questionnaire, participants could donate their reward for completing the questionnaire to a charity. They can choose for a donation to the AIDS Fund, KWF Kankerbestrijding, the Netherlands Heart Foundation, or the Red Cross. Respondents could also receive the reward in the form of a voucher. Half of the respondents were presented with the text, “Did you know that 63% of the Dutch find that everyone has a responsibility to help others when they need it need? The other half of the respondents were not presented with this text. The purpose of the experiment was to test whether a moral appeal would influence giving behavior.
As in previous experiments (Bekkers, 2006), only a small proportion of participants (3.8%) give away their points to charity. We see no difference in the giving behavior between the group that did see the text (3.7% donated to charity) versus the group that was not shown the text (3.8%). This finding seems to indicate that the text had no effect. But it is a bit more complicated than that.
The effect of a moral appeal depends on personal norms
Each edition we ask to what extent participants agree with the statement “Everybody in this world has a responsibility to help others when they need assistance.” This statement is an item in the principle of care scale (Bekkers & Wilhelm, 2016). We ask this question at the beginning of the questionnaire, before participants can distribute points. This is how we know
we know that 63% of respondents “agree” or “strongly agree” with the statement.
Figure: the percentage donating their reward to charity when a moral appeal was shown or not, for two groups that did not agree (disagree strongly, disagree, or neither disagree nor agree) vs agreed or agreed strongly with the statement that “Everyone has a responsibility to help others when they need it.”
Here’s the plot twist: when we make a moral appeal to participants to give by reminding them of the norm we see that donations among those who do not agree personally with the norm goes up significantly. Without a moral appeal, hardly anyone from the group of participants who did not agree with the statement gave the reward to charity (1%). But with a moral appeal, the percentage of respondents who donated the reward is more than three times higher (3.6%). In contrast, the group of participants who do agree with the norm of helping others seems to be somewhat less generous after seeing the moral appeal: among these participants, 3.8% gave the reward away after the appeal, compared with another 5.3% without a reminder of the norm. Perhaps the information that 63% agreed with the statement disappointed them – it implies that 37% did not (completely) agree with the statement.
The positive effect of the moral appeal for the group that personally disagreed with the statement was canceled out by the negative effect for the group that did agree with the statement. The null finding that moral appeals did not work concealed an interaction with personal views of participants on the statement – those agreeing with it reduced their giving when they were confronted with the appeal, while those who did not agree were encouraged by it. This indicates that a moral appeal does not work positively for everyone. The effect of a moral appeal depends on personal norms.
Open data, code and results
The data are here and the code is here. The results are here. This text is a translation of pages 111-112 from Bekkers & Van Teunenbroek (2022).
References
Bekkers, R. (2007). Measuring Altruistic Behavior in Surveys: The All-Or-Nothing Dictator Game. Survey Research Methods, 1(3): 139-144. https://ojs.ub.uni-konstanz.de/srm/article/download/54/530
Bekkers, R., Boonstoppel, E., De Wit, A., Van Teunenbroek, C. & Fraai, P. (2021). Giving in the Netherlands Panel Survey: User Manual. Amsterdam: Center for Philanthropic Studies, Vrije Universiteit Amsterdam. https://osf.io/7ta2g
Bekkers, R., Gouwenberg, B., Koolen-Maas, S. & Schuyt, T. (2022, Eds.). Geven in Nederland 2022: maatschappelijke betrokkenheid in kaart gebracht. Amsterdam: Amsterdam University Press. https://osf.io/download/kqa8j/
Bekkers, R. & Ottoni-Wilhelm, M. (2016). ‘Principle of Care and Giving to Help People in Need’. European Journal of Personality, 30(3): 240-257. http://dx.doi.org/10.1002/per.2057
Bekkers, R. & Van Teunenbroek, C. (2022). Geven door huishoudens. Pp. 84-118 in: Bekkers, R., & Gouwenberg, B.M. (Eds.). Geven in Nederland 2022. Amsterdam: Amsterdam University Press. https://renebekkers.files.wordpress.com/2022/06/bekkers_vanteunenbroek_22_h1_gin22.pdf
Capraro, V., & Vanzo, A. (2019). The power of moral words: Loaded language generates framing effects in the extreme dictator game. Judgment and Decision Making, 14: 309-317. https://www.sas.upenn.edu/~baron/journal/19/190107/jdm190107.html
Dal Bó, E., & Dal Bó, P. (2014). “Do the right thing”: The effects of moral suasion on cooperation. Journal of Public Economics, 117: 28-38. https://www.nber.org/papers/w15559
Van Teunenbroek, C., Bekkers, R. & Beersma, B. (2021). They ought to do it too: Understanding effects of social information on donation behavior and mood. International Review of Public and Nonprofit Marketing, 18, 229–253. https://doi.org/10.1007/s12208-020-00270-3