Moral Stereotyping: A Surface-Based Cue Promotes the Use of Generalized Morality at an Early Stage of Human Interactions

Generalized morality refers to the use of prior knowledge of others' morality to infer unknown aspects of morality, which is a crucial heuristic for obtaining cooperative partners in a large society. This research investigated how information is used for generalized morality. It was predicted that group-level generalized morality, or moral stereotyping, would come first when the information is limited, thereby people rely on a surface cue. As information increases, they come to use individual-level generalized morality, which is shown by Jackson et al. Following Jackson et al., the current research employed an agent-based modeling (Study 1) and human study (Study 2). Study 1 found that participants used moral stereotyping first in their interactions when the visual cue-morality association was salient. Study 2 also showed the same trend. This research worked as a replication of the previous study and as an important extension to understanding how moral cognition develops.