[O3] Oral Pesentation 3: Thinking & Language

[O3-04] Diverse memory can lead to more accurate group decision making

Experimental and simulation studies

*Hidehito Honda¹, Itsuki Fujisaki², Toshihiko Matsuka³, Ueda Kazuhiro² (1. Yasuda Women's University, 2. The University of Tokyo, 3. Chiba University)

Keywords:heuristic, group decision making, diversity of memory

Previous studies have shown that people can make adaptive inferences based on memory-based simple heuristics such as recognition, fluency, or familiarity heuristic. In the present study, we discussed the adaptive nature of memory-based simple heuristics in a group decision making setting. In particular, we examined how the diversity of memory affected group decision making. We predicted that, when the group members’ memories were diverse, group decision making would become more accurate. To examine this prediction, we conducted a behavioral experiment and computer simulations, and our results generally supported the prediction. These results suggested that diversity of memory in group members can boost performance of group decision making.