Which of the following statements is true of group cohesiveness? as groups become more successful, they become increasingly attractive to their members, and their cohesiveness tends to increase. decreasing levels of group cohesiveness result in little deviance in groups. if a group is high in cohesiveness and small in size, managers should consider dividing the group in half and assigning different tasks and goals to the two newly formed groups. as group cohesiveness decreases, the emphasis placed on group goal accomplishment increases within a group. to promote cohesiveness in groups, managers should form groups that are significantly large in size.