“…A monist model in which all moral judgments (even those based on explicitly harmless transgressions) are produced by a single mental process (perceptions of intentional dyadic harm) cleans up much of the "litter" of empirically observed moral life, and in this cleaning suffers as a scientific description of morality. To name just three examples, such an account cannot explain: why incidental disgust harshens moral judgments (Schnall et al, 2008), why cognitive processes differ for Care-and Sanctity-based moral judgments (Young & Saxe, 2011), or why moral judgments of character can be produced by less harmful (Tannenbaum, Uhlmann, & Diermeier, 2011) or even harmless (Inbar, Pizarro, & Cushman, 2012) actions. Although not as explicitly committed to monism, accounts boiling morality down to fairness (Baumard et al, 2013) or universal grammar (Mikhail, 2007) can suffer from the same deficits in their ability to adequately describe and explain human morality in all its messiness and complexity (see also Graham, 2013).…”