Engel, Christoph Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://journal.sjdm.org/19/191223/jdm191223.html (Any fulltext)
Engel, C., & van Lange, P. (2021). Social Mindfulness is Normative When Costs are Low, but Rapidly Declines with Increases in Costs. Judgment and Decision Making, 16, 290-322.