To provide deeper insights into the relationships between psychopathic traits and utilitarian moral judgment, we studied N = 702 adults using three psychopathy scales: (a) the Levenson's Self-report Psychopathy Scale; (b) the Psychopathic Personality Inventory; and (c) the Triarchic Psychopathy Measure; and three measures of utilitarian moral judgment: (a) trolley dilemmas; (b) the Consequences, Norms, and Inaction (CNI) model of moral decision-making; and (c) the Oxford Utilitarianism Scale. When using the traditional approach to moral judgment (i.e., trolley dilemmas, instrumental harm, traditional score from the CNI model), we found that higher levels of psychopathic traits were associated with a higher utilitarian tendency. When using the modeling approach, we found that a higher level of psychopathic traits was related to weaker sensitivity to moral norms and less action averse in morally problematic situations. In addition, we found negative associations between impartial beneficence and all psychopathy scores.
Keywords: CNI model of moral decision-making; impartial beneficence; instrumental harm; psychopathy; trolley dilemmas.