 An impressive range of evidence suggests that humans are natural-born norm learners. The developmental trajectory of norm-guided cognition in humans appears to exhibit robust similarities across cultures, with children beginning to participate in normative behavior around the same early age (see House et al. 2013 and Tomasello 2019 for context). Between three and five years of age children exhibit knowledge of different kinds of normative rules (Turiel 1983; Smetana 1993; Nucci 2001), and at as early as three years of age they are able to perform competently in deontic reasoning tasks (R. Cummins 1996; Beller 2010). They also enforce norms, both when they believe the transgressive behavior was freely chosen (Josephs et al. 2016) but also when they understand that it was unintentional (Samland et al. 2016) at least in some circumstances (cf. Chernyak &amp; Sobel 2016; also see Barrett et al. 2016 and Curtin et al. forthcoming for evidence and discussion of cross cultural variation in people’s sensitivity to the mental states of norm violators). Moreover, children are alert to how other people respond to transgressions, showing more positive feelings towards those who enforce a norm violation than toward those who leave violations uncorrected (Vaish et al. 2016).