TY - JOUR AU - Meyen, Sascha AU - Sigg, Dorothee M. B. AU - Luxburg, Ulrike von AU - Franz, Volker H. PY - 2021 DA - 2021/03/15 TI - Group decisions based on confidence weighted majority voting JO - Cognitive Research: Principles and Implications SP - 18 VL - 6 IS - 1 AB - It has repeatedly been reported that, when making decisions under uncertainty, groups outperform individuals. Real groups are often replaced by simulated groups: Instead of performing an actual group discussion, individual responses are aggregated by a numerical computation. While studies have typically used unweighted majority voting (MV) for this aggregation, the theoretically optimal method is confidence weighted majority voting (CWMV)—if independent and accurate confidence ratings from the individual group members are available. To determine which simulations (MV vs. CWMV) reflect real group processes better, we applied formal cognitive modeling and compared simulated group responses to real group responses. SN - 2365-7464 UR - https://doi.org/10.1186/s41235-021-00279-0 DO - 10.1186/s41235-021-00279-0 ID - Meyen2021 ER -