Two prominent theoretical frameworks in moral psychology, Moral Foundations and Dual Process Theory, share a broad foundational assumption that individual differences in human morality are dispositional and in part due to genetic variation. The only published direct test of heritability, however, found little evidence of genetic influences on moral judgments using instrumentation approaches associated with Moral Foundations Theory. This raised questions about one of the core assumptions underpinning intuitionist theories of moral psychology. Here we examine the heritability of moral psychology using the moral dilemmas approach commonly used in Dual Process Theory research. Using such measures, we find consistent and significant evidence of heritability. These findings have important implications not only for understanding which measures do, or do not, tap into the genetically influenced aspects of moral decision-making, but in better establishing the utility and validity of different intuitionist theoretical frameworks and the source of why people differ in those frameworks.

道德心理学中的两个突出的理论框架，道德基础和双重过程理论，共享一个广泛的基本假设，即人类道德的个体差异是性格差异，部分原因是遗传变异。然而，唯一已发表的遗传性直接测试发现很少有证据表明遗传对道德判断的影响使用与道德基础理论相关的仪器方法。这引发了关于支撑道德心理学直觉主义理论的核心假设之一的问题。在这里，我们使用双重过程理论研究中常用的道德困境方法来检验道德心理学的遗传性。使用这些措施，我们发现了一致且重要的遗传性证据。这些发现不仅对理解哪些措施起作用具有重要意义，