Many important real-world decision-making problems involve group interactions among individuals with purely informational interactions. Such situations arise for example in jury deliberations, expert committees, medical diagnoses, etc. We model the purely informational interactions of group members, where they receive private information and act…

Compares the Group Valence Model (GVM) to several derived versions of the Valence Distribution Model (VDM), as they relate to the group problem-solving process. Suggests that, not withstanding predictive accuracy, the VDM seems generally inferior to the GVM, which consistently accounts for more of the decision-making phenomenon. Discusses…