Moralization, a term introduced to moral psychology by Paul Rozin, refers to the process through which preferences are converted into values.[126][127][128] Relatedly, Linda Skitka and colleagues have introduced the concept of moral conviction, which refers to a "strong and absolute belief that something is right or wrong, moral or immoral."[129][130] According to Skitka's integrated theory of moral conviction (ITMC), attitudes held with moral conviction, known as moral mandates, differ from strong but non-moral attitudes in a number of important ways. Namely, moral mandates derive their motivational force from their perceived universality, perceived objectivity, and strong ties to emotion.[131] Perceived universality refers to the notion that individuals experience moral mandates as transcending persons and cultures; additionally, they are regarded as matters of fact. Regarding association with emotion, ITMC is consistent with Jonathan Haidt's social intuitionist model in stating that moral judgments are accompanied by discrete moral emotions (i.e., disgust, shame, guilt). Importantly, Skitka maintains that moral mandates are not the same thing as moral values. Whether an issue will be associated with moral conviction varies across persons.
One of the main lines of IMTC research addresses the behavioral implications of moral mandates. Individuals prefer greater social and physical distance from attitudinally dissimilar others when moral conviction was high. This effect of moral conviction could not be explained by traditional measures of attitude strength, extremity, or centrality. Skitka, Bauman, and Sargis placed participants in either attitudinally heterogeneous or homogenous groups to discuss procedures regarding two morally mandated issues, abortion and capital punishment. Those in attitudinally heterogeneous groups demonstrated the least amount of goodwill towards other group members, the least amount of cooperation, and the most tension/defensiveness. Furthermore, individuals discussing a morally mandated issue were less likely to reach a consensus compared to those discussing non-moral issues.