The Impact of Fairness Norm Violations on Moral Decision-Making from Different Perspectives: An Analysis Based on the CNI Model

Objective: To investigate the effects of violations of two types of norms—distributive fairness and procedural fairness—on individuals' moral decision-making from the perspectives of experiencers and observers. Methods: Four single-factor between-subjects experiments were conducted, using tasks such as the ultimatum game and the dictator game to manipulate fairness norm violation contexts. Participants' responses to 24 moral dilemmas were collected, and the CNI (Consequence, Norm, Inaction) model was used to quantify three core parameters of the moral decision-making process: outcome sensitivity (C parameter), moral norm sensitivity (N parameter), and inaction/action preference (I parameter). Results: (...)