Applying process dissociation to self-sacrificial moral dilemmas: Extending the dual-process model.

There is considerable evidence linking cognitive reflection with utilitarian judgments in dilemmas that involve sacrificing someone else for the greater good. However, the evidence is mixed on the question of whether cognitive reflection is associated with utilitarian judgments in self-sacrificial dilemmas. We employed process dissociation to extract a self-sacrificial utilitarian (SU) parameter, an altruism (A) parameter, an other-sacrificial (OU) utilitarian parameter, and a deontology (D) parameter. In Study 1, the cognitive reflection test (CRT) positively correlated with both SU and OU (replicated in Studies 2 and 4, pre-registered). In Study 2, we found that instructing participants to rely on reason increased SU and OU (replicated in Study 4, pre-registered). In Study 3, we found that SU and OU positively correlated with giving in the single-game version of the public goods game (replicated in Study 4, pre-registered), which provides behavioral validation that they are genuine moral tendencies. Together, these studies constitute strong cumulative evidence that SU and OU are both valid measures that are associated with reliance on cognitive reflection.