“…Lie-Panis and André (2022) show that, because ability to delay gratification enables higher levels of cooperation, it can evolve into a credible signal of trustworthiness. Psychological evidence confirms that, in interaction with strangers as well as in established relationships, people infer others' self-control from their behavior, and expect individuals they perceive as more self-controlled to behave more cooperatively (Buyukcan-Tetik & Pronk, 2021; Buyukcan-Tetik, Finkenauer, Siersema, Vander Heyden, & Krabbendam, 2015; Gai & Bhattacharjee, 2022; Gomillion, Lamarche, Murray, & Harris, 2014; Koval, VanDellen, Fitzsimons, & Ranby, 2015; Peetz & Kammrath, 2013; Righetti & Finkenauer, 2011). People's intuitions about a good moral character include traits arguably related to self-control, such as being principled or responsible (Goodwin, 2015; Goodwin, Piazza, & Rozin, 2013).…”