The more the merrier? Increasing group size may be detrimental to decision-making performance in nominal groups.

ABSTRACT: Demonstrability-the extent to which group members can recognize a correct solution to a problem-has a significant effect on group performance. However, the interplay between group size, demonstrability and performance is not well understood. This paper addresses these gaps by studying the joint effect of two factors-the difficulty of solving a problem and the difficulty of verifying the correctness of a solution-on the ability of groups of varying sizes to converge to correct solutions. Our empirical investigations use problem instances from different computational complexity classes, NP-Complete (NPC) and PSPACE-complete (PSC), that exhibit similar solution difficulty but differ in verification difficulty. Our study focuses on nominal groups to isolate the effect of problem complexity on

SUBMITTER: Amir O 

PROVIDER: S-EPMC5828441 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature