The functional theory of group decision quality proposes that there are four critical functions groups must fulfill to make high-quality decisions: thoroughly understanding the problem, discovering potential solutions, identifying decision-making criteria, and assessing the consequences of solutions. The theory maintains that how groups communicate impacts decision quality and can be structured to increase the likelihood of good outcomes. It has influenced research on how communication affects group decision-making and has practical applications for organizations. However, it is criticized for not accounting for communication outside official group settings.